ESO TAP_OBS: a TAP service to browse and access raw and reduced data, and to query the ambient measurements, of the La Silla Paranal Observatory.

ESO TAP_OBS: a TAP service to browse and access raw and reduced data, and to query the ambient measurements, of the La Silla Paranal Observatory. ESO TAP_OBS ivo://eso.org/tap_obs European Southern Observatory ESO https://archive.eso.org/images/eso-logo.gif Archive Science Group support@eso.org Virtual Observatory OPTICAL ASTRONOMY INFRARED ASTRONOMY reduced data archive raw data archive ambient measurements EARTH ATMOSPHERE SEEING MONITORS TURBULENCE ADQL TAP_OBS is the ESO Science Archive TAP endpoint for observations (raw and reduced data) and ambient measurements (atmospheric seeing, turbulence, water vapour, relative humidity, air pressure, etc.) taken at the La Silla Paranal Observatory, including the Chajnantor (APEX) data. The Table Access Protocol (TAP) lets you execute queries against our database tables, and inspect various metadata. Table Upload is not currently supported, though it is foreseen for a next release. The IVOA ObsCore standard service is also provided (table name: ivoa.ObsCore), but currently only for reduced data. Other tables exposed are the dbo.raw describing all the LPO observations, the ambient tables (in the asm schema), plus the provenance table to close the loop between the raw and the reduced data, but also to describe the relationships between reduced data (e.g. a source table originating from a reduced image, etc.). A sibling service (TAP_CAT, endpoint: https://archive.eso.org/tap_cat) exists and can be used to query the astronomical catalogs produced by the principal investigators of ESO programmes (ESO public surveys included). https://archive.eso.org/cms/eso-data/programmatic-access.html https://archive.eso.org/tap_obs ObsCore-1.1 ADQL 2.0 ADQL-2.0 application/x-votable+xml votable application/x-votable+xml;serialization=fits votable_fits application/x-votable+xml;serialization=binary votable_binary application/x-votable+xml;serialization=binary2 votable_binary2 text/csv csv text/tab-separated-values tsv application/fits fits text/plain txt text/html html application/json json 1 20 60 3600 20000 15000000 https://archive.eso.org/tap_obs/availability https://archive.eso.org/tap_obs/capabilities https://archive.eso.org/tap_obs/tables https://archive.eso.org/tap_obs/examples asm The Astronomical Site Monitor (asm) schema contains the measurements of environmental conditions at the three sites La Silla, Paranal, and Chajnantor. asm.ambient_lasillaTable containing historical La Silla ambient data measured by the old DIMM2 seeing monitor (1994-2023) and those measured by the Ring-Image Next Generation Scintillation Sensor (RINGSS) since 02 May 2025. Time coverage: January 1994 onwards. More info at: https://archive.eso.org/wdb/help/eso/ambient_lasilla.html#ambient airmass Airmass: Airmass at which the ASM-DIMM telescope measures the site seeing. obs.airMass float principal dec Target declination FK5 J2000: The declination of the observed star at which the ASM-DIMM telescope measures the site seeing [deg]. deg pos.eq.dec double principal fwhm DIMM-Seeing: Observatory site seeing as measured by the ASM-DIMM telescope, Full Width Half Maximum at 500nm [arcsec] arcsec instr.obsty.seeing;meta.main float principal integration Timebin [s] used for measurement of ambient data sample. s time.interval short principal midpoint_date Midpoint (time) of the measurement. time char principal ra Target right ascension FK5 J2000: The right ascension of the target star at which the ASM-DIMM telescope measures the site seeing [deg] deg pos.eq.ra double principal start_date Start time of the measurement. time.start char principal

asm.dimm_paranalTable containing the ambient measurements of the Differential Image Motion Monitor (DIMM) channel of the MASS-DIMM instrument. DIMM operates in an extended range of atmospheric conditions which overlap science operation. It provides, along with other measurements, the Paranal reference seeing. Time coverage: 2016-APR-04 12:00:00 UTC onwards. More info at: http://archive.eso.org/wdb/help/eso/ambient_paranal.html#dimm_2016 "interval" Timebin [s] used for measurement of ambient data sample. s time.interval short airmass Airmass: Airmass at which the ASM-DIMM telescope measures the site seeing. (eng. param.) obs.airMass float principal alt Telescope pointing: Telescope elevation [deg]. (setup param.) deg pos.az.alt float principal az Telescope pointing: Telescope azimuth [deg]. (setup param.) deg pos.az.azi float principal dec Target declination FK5 J2000: The declination of the observed star at which the ASM-DIMM telescope measures the site seeing [deg]. (setup param.) deg pos.eq.dec double principal frames Number of frames: Total number of processed frames. (eng. param.) int fwhm DIMM-Seeing: The total seeing calculated with DIMM telescope. The value is calculated using the following formula: FWHM = 2E(+7) C.n2**(0.6) [arcsec] (sci. param.) arcsec instr.obsty.seeing;meta.main float principal lcoefrel Longitudinal Correlation: Average of the longitudinal basetime correlation coefficient. (eng. param.) float lflux Left Mean Flux: Mean total flux in the left image [ADU]. (eng. param.) adu int lfluxerr Left Mean Flux RMS: Relative RMS error of total flux in the left image. (eng. param.) float lhvar Longitudinal Variance: Average of the longitudinal motion basetime variance [pixel**2]. (eng. param.) pixel**2 float lhvarerr Longitudinal Variance RMS: RMS of the longitudinal motion basetime variance [pixel]. (eng. param.) pixel float llvar Longitudinal Variance Average: Low frequency longitudinal motion variance [pixel**2]. (eng. param.) pixel**2 float lsci Left Scintillation Index: Mean scintillation index in the DIMM aperture for the left image. (eng. param.) float lsep Longitudinal Separation: Mean longitudinal separation of right and left images [pixel]. (eng. param.) pixel float lstrh Left Strehl Number: Strehl number corrected for seeing for the left image. (eng. param.) float lturb Longitudinal Cn2: Turbulence intensity calculated with longitudinal motion [10**(-15)m**(1/3)]. (eng. param.) 10**(-15)m**(1/3) double lturbs Longitudinal Cn2 Residual: Turbulence intensity calculated with longitudinal motion averaged over basetime [10**(-15)m**(1/3)]. (eng. param.) 10**(-15)m**(1/3) double midpoint_date Midpoint (time) of the measurement. time char ra Target right ascension FK5 J2000: The right ascension of the observed star at which the ASM-DIMM telescope measures the site seeing [deg]. (setup param.) deg pos.eq.ra double principal rfl Relative Flux RMS: Relative Flux variations measured along the line of sight normalized by the average flux. (sci. param.) double principal rfl_time Relative Flux RMS base time: Time range of measurements (start of first interval to end of last interval) used to calculate the relative flux variations measured along the line of sight [s]. (sci. param.) s int principal rflux Right Mean Flux: Mean total flux in the right image [ADU]. (eng. param.) adu int rfluxerr Right Mean Flux RMS: Relative RMS error of total flux in the right image [ADU]. (eng. param.) adu float rsci Right Scintillation Index: Mean scintillation index in the DIMM aperture for the right image. (eng. param.) float rstrh Right Strehl Number: Strehl number corrected for seeing for the right image. (eng. param.) double sci Scintillation Index: Mean scintillation index in the DIMM aperture for both images. The value is the average between lsci and rsci. (eng. param.) float start_date The start time of the measurement. time.start char principal tcoefrel Transverse Correlation: Average of the transverse basetime correlation coefficient. (eng. param.) double thvar Transverse Variance: Average of the transverse motion basetime variance [pixel**2]. (eng. param.) pixel**2 float thvarerr Transverse Variance RMS: RMS of the transverse motion basetime variance [pixel]. (eng. param.) pixel float tlvar Transverse Variance Average: Low frequency transversal motion variance [pixel**2]. (eng. param.) pixel**2 double tsep Transverse Separation: Mean transverse separation of right and left images [pixel]. (eng. param.) pixel float tturb Transverse Cn2: Turbulence intensity calculated with transverse motion [10**(-15)m**(1/3)]. (eng. param.) 10**(-15)m**(1/3) double tturbs Transverse Cn2 Residual: Turbulence intensity calculated with transverse motion averaged over basetime [10**(-15)m**(1/3)]. (eng. param.) 10**(-15)m**(1/3) double turb Cn2: Turbulence intensity calculated with both motions [10**(-15)m**(1/3)]. (eng. param.) 10**(-15)m**(1/3) double turbs Cn2 Residual: Turbulence intensity calculated with both motions averaged over basetime [10**(-15)m**(1/3)]. (eng. param.) 10**(-15)m**(1/3) double valid 1 if a valid measurement, 0 otherwise. meta.code.qual short principal

asm.historical_ambient_paranalTable containing the ambient measurements of the ESO seeing monitor DIMM3 seeing monitor, starting August 1998, and up to the deployment in operations of the new Astronomical Site Monitor (ASM) in April 2016. All seeing values above 2.5 arcsec have been truncated. Time coverage: from 1998-Aug-19 to 2016-Apr-04. More info at: https://archive.eso.org/wdb/help/eso/ambient_paranal.html#dimm_1998 airmass Airmass: Airmass at which the ASM-DIMM telescope measures the site seeing. obs.airMass float principal dec Target declination FK5 J2000: The declination of the observed star at which the ASM-DIMM telescope measures the site seeing [deg]. deg pos.eq.dec double principal fwhm DIMM-Seeing: Observatory site seeing as measured by the ASM-DIMM telescope, Full Width Half Maximum at 500nm [arcsec] arcsec instr.obsty.seeing;meta.main float principal integration Timebin [s] used for measurement of ambient data sample. s time.interval short principal midpoint_date Midpoint (time) of the measurement. time char principal ra Target right ascension FK5 J2000: The right ascension of the target star at which the ASM-DIMM telescope measures the site seeing [deg] deg pos.eq.ra double principal relative_flux Relative Flux RMS: Relative Flux variations measured along the line of sight normalized by the average flux float principal start_date Start time of the measurement. time.start char principal tau0 Tau0: Coherence time of the turbulence [s]. s float principal theta0 Theta0: Isoplanatic angle of the turbulence [arcsec]. arcsec float principal

asm.lhatpros_paranalAmbient measurements, since 2014, of the Low Humidity and Temperature Profiling (LHATPRO) microwave radiometers located on Cerro Paranal. Measurements at zenith of: infrared temperature, liquid water path, and precipitable water vapour. Averages over the reported integration time. Three radiometers (identified by their LHATPRO ID: 1, 2, 3) are currently available at different locations named: A, B, C. More info at: http://archive.eso.org/wdb/help/eso/ambient_paranal.html#lhatpro alt Telescope elevation [deg] (horizontal coord. sys.): the direction to which the radiometer was pointing at the time of measurement. deg float principal az Telescope azimuth [deg] (horizontal coord. sys.): the direction to which the radiometer was pointing at the time of measurement. The convention for azimuth in the LHATPRO tables is the same as for ESO telescopes: 0 deg = South, 90 deg = West deg float principal dec declination [deg] (equatorial, J2000) deg float principal integration Timebin [s] used for measurement of ambient data sample. s short principal irt0 IR temperature: Measured infrared sky brightness temperature at Zenith [Celsius]. Celsius float principal lhatpro_id An integer used to identify a specific radiometer, which could be installed on different platforms, or even sites (e.g. moved from Paranal to Armazones), at different times. short principal lwp0 Liquid water path: Measured liquid water path [g.m**(-2)] at Zenith. g.m**(-2) float principal midpoint_date Midpoint (time) of the measurement. char principal platform The name of the platform (either A, B, or C) where the radiometer is located: Platform A (lat: -24:37:35.95, lon: -70:24:11.93), Platform B (-24:37:36.48, -70:24:11.82), Platform C (-24:37:36.34, -70:24:12.34) char principal pwv0 Water vapour: Measured Precipitable Water Vapor at Zenith [mm]. mm float principal ra right ascension [deg] (equatorial, J2000) deg float principal start_date The start time of the measurement. char principal valid 1 if a valid measurement, 0 otherwise. meta.code.qual short principal

asm.lhatpros_paranal_irtAmbient measurements, since 2014, of the Low Humidity and Temperature Profiling (LHATPRO) microwave radiometers located on Cerro Paranal. Measurements at provided coordinates of the infrared temperature. Averages over the reported integrtion time (up to 5 seconds, as of 2020). Three radiometers (identified by their LHATPRO ID: 1, 2, 3) are currently available at different locations named: A, B, C. More info at: http://archive.eso.org/wdb/help/eso/ambient_paranal.html#lhatpro alt Telescope elevation [deg] (horizontal coord. sys.): the direction to which the radiometer was pointing at the time of measurement. deg float principal az Telescope azimuth [deg] (horizontal coord. sys.): the direction to which the radiometer was pointing at the time of measurement. The convention for azimuth in the LHATPRO tables is the same as for ESO telescopes: 0 deg = South, 90 deg = West deg float principal dec declination [deg] (equatorial, J2000) deg float principal integration Timebin [s] used for measurement of ambient data sample. s short principal irt IR temperature: Measured infrared sky brightness temperature at Zenith [Celsius]. Celsius float principal lhatpro_id An integer used to identify a specific radiometer, which could be installed on different platforms, or even sites (e.g. moved from Paranal to Armazones), at different times. short principal midpoint_date Midpoint (time) of the measurement. char principal platform The name of the platform (either A, B, or C) where the radiometer is located: Platform A (lat: -24:37:35.95, lon: -70:24:11.93), Platform B (-24:37:36.48, -70:24:11.82), Platform C (-24:37:36.34, -70:24:12.34) char principal ra right ascension [deg] (equatorial, J2000) deg float principal start_date The start time of the measurement. char principal valid 1 if a valid measurement, 0 otherwise. meta.code.qual short principal

asm.lhatpros_paranal_profilesAmbient measurements, since 2014, of the Low Humidity and Temperature Profiling (LHATPRO) microwave radiometers located on Cerro Paranal. Atmospheric profiles at provided coordinates and at 39 different altitudes from 0m to 10,000m over the VLT platform, of absolute and relative humidity, and infrared temperature. Averages over the reported integration time (typically 60 seconds). More info at: http://archive.eso.org/wdb/help/eso/ambient_paranal.html#lhatpro ahum1 Absolute Humidity Value [g/m**3] at 0m g/m**3 float principal ahum10 Absolute Humidity Value [g/m**3] at 250m g/m**3 float principal ahum11 Absolute Humidity Value [g/m**3] at 325m g/m**3 float principal ahum12 Absolute Humidity Value [g/m**3] at 400m g/m**3 float principal ahum13 Absolute Humidity Value [g/m**3] at 475m g/m**3 float principal ahum14 Absolute Humidity Value [g/m**3] at 550m g/m**3 float principal ahum15 Absolute Humidity Value [g/m**3] at 625m g/m**3 float principal ahum16 Absolute Humidity Value [g/m**3] at 700m g/m**3 float principal ahum17 Absolute Humidity Value [g/m**3] at 800m g/m**3 float principal ahum18 Absolute Humidity Value [g/m**3] at 900m g/m**3 float principal ahum19 Absolute Humidity Value [g/m**3] at 1000m g/m**3 float principal ahum2 Absolute Humidity Value [g/m**3] at 10m g/m**3 float principal ahum20 Absolute Humidity Value [g/m**3] at 1150m g/m**3 float principal ahum21 Absolute Humidity Value [g/m**3] at 1300m g/m**3 float principal ahum22 Absolute Humidity Value [g/m**3] at 1450m g/m**3 float principal ahum23 Absolute Humidity Value [g/m**3] at 1600m g/m**3 float principal ahum24 Absolute Humidity Value [g/m**3] at 1800m g/m**3 float principal ahum25 Absolute Humidity Value [g/m**3] at 2000m g/m**3 float principal ahum26 Absolute Humidity Value [g/m**3] at 2200m g/m**3 float principal ahum27 Absolute Humidity Value [g/m**3] at 2500m g/m**3 float principal ahum28 Absolute Humidity Value [g/m**3] at 2800m g/m**3 float principal ahum29 Absolute Humidity Value [g/m**3] at 3100m g/m**3 float principal ahum3 Absolute Humidity Value [g/m**3] at 30m g/m**3 float principal ahum30 Absolute Humidity Value [g/m**3] at 3500m g/m**3 float principal ahum31 Absolute Humidity Value [g/m**3] at 3900m g/m**3 float principal ahum32 Absolute Humidity Value [g/m**3] at 4400m g/m**3 float principal ahum33 Absolute Humidity Value [g/m**3] at 5000m g/m**3 float principal ahum34 Absolute Humidity Value [g/m**3] at 5600m g/m**3 float principal ahum35 Absolute Humidity Value [g/m**3] at 6200m g/m**3 float principal ahum36 Absolute Humidity Value [g/m**3] at 7000m g/m**3 float principal ahum37 Absolute Humidity Value [g/m**3] at 8000m g/m**3 float principal ahum38 Absolute Humidity Value [g/m**3] at 9000m g/m**3 float principal ahum39 Absolute Humidity Value [g/m**3] at 10000m g/m**3 float principal ahum4 Absolute Humidity Value [g/m**3] at 50m g/m**3 float principal ahum5 Absolute Humidity Value [g/m**3] at 75m g/m**3 float principal ahum6 Absolute Humidity Value [g/m**3] at 100m g/m**3 float principal ahum7 Absolute Humidity Value [g/m**3] at 125m g/m**3 float principal ahum8 Absolute Humidity Value [g/m**3] at 150m g/m**3 float principal ahum9 Absolute Humidity Value [g/m**3] at 200m g/m**3 float principal alt Telescope elevation [deg] (horizontal coord. sys.): the direction to which the radiometer was pointing at the time of measurement. deg float principal az Telescope azimuth [deg] (horizontal coord. sys.): the direction to which the radiometer was pointing at the time of measurement. The convention for azimuth in the LHATPRO tables is the same as for ESO telescopes: 0 deg = South, 90 deg = West deg float principal dec declination [deg] (equatorial, J2000) deg float principal integration Timebin [s] used for measurement of ambient data sample. s short principal lhatpro_id An integer used to identify a specific radiometer, which could be installed on different platforms, or even sites (e.g. moved from Paranal to Armazones), at different times. short principal midpoint_date Midpoint (time) of the measurement. char principal platform The name of the platform (either A, B, or C) where the radiometer is located: Platform A (lat: -24:37:35.95, lon: -70:24:11.93), Platform B (-24:37:36.48, -70:24:11.82), Platform C (-24:37:36.34, -70:24:12.34) char principal ra right ascension [deg] (equatorial, J2000) deg float principal rhum1 Relative Humidity Value [%] at 0m float principal rhum10 Relative Humidity Value [%] at 250m float principal rhum11 Relative Humidity Value [%] at 325m float principal rhum12 Relative Humidity Value [%] at 400m float principal rhum13 Relative Humidity Value [%] at 475m float principal rhum14 Relative Humidity Value [%] at 550m float principal rhum15 Relative Humidity Value [%] at 625m float principal rhum16 Relative Humidity Value [%] at 700m float principal rhum17 Relative Humidity Value [%] at 800m float principal rhum18 Relative Humidity Value [%] at 900m float principal rhum19 Relative Humidity Value [%] at 1000m float principal rhum2 Relative Humidity Value [%] at 10m float principal rhum20 Relative Humidity Value [%] at 1150m float principal rhum21 Relative Humidity Value [%] at 1300m float principal rhum22 Relative Humidity Value [%] at 1450m float principal rhum23 Relative Humidity Value [%] at 1600m float principal rhum24 Relative Humidity Value [%] at 1800m float principal rhum25 Relative Humidity Value [%] at 2000m float principal rhum26 Relative Humidity Value [%] at 2200m float principal rhum27 Relative Humidity Value [%] at 2500m float principal rhum28 Relative Humidity Value [%] at 2800m float principal rhum29 Relative Humidity Value [%] at 3100m float principal rhum3 Relative Humidity Value [%] at 30m float principal rhum30 Relative Humidity Value [%] at 3500m float principal rhum31 Relative Humidity Value [%] at 3900m float principal rhum32 Relative Humidity Value [%] at 4400m float principal rhum33 Relative Humidity Value [%] at 5000m float principal rhum34 Relative Humidity Value [%] at 5600m float principal rhum35 Relative Humidity Value [%] at 6200m float principal rhum36 Relative Humidity Value [%] at 7000m float principal rhum37 Relative Humidity Value [%] at 8000m float principal rhum38 Relative Humidity Value [%] at 9000m float principal rhum39 Relative Humidity Value [%] at 10000m float principal rhum4 Relative Humidity Value [%] at 50m float principal rhum5 Relative Humidity Value [%] at 75m float principal rhum6 Relative Humidity Value [%] at 100m float principal rhum7 Relative Humidity Value [%] at 125m float principal rhum8 Relative Humidity Value [%] at 150m float principal rhum9 Relative Humidity Value [%] at 200m float principal start_date The start time of the measurement. char principal temp1 Temperature Value [K] at 0m K float principal temp10 Temperature Value [K] at 250m K float principal temp11 Temperature Value [K] at 325m K float principal temp12 Temperature Value [K] at 400m K float principal temp13 Temperature Value [K] at 475m K float principal temp14 Temperature Value [K] at 550m K float principal temp15 Temperature Value [K] at 625m K float principal temp16 Temperature Value [K] at 700m K float principal temp17 Temperature Value [K] at 800m K float principal temp18 Temperature Value [K] at 900m K float principal temp19 Temperature Value [K] at 1000m K float principal temp2 Temperature Value [K] at 10m K float principal temp20 Temperature Value [K] at 1150m K float principal temp21 Temperature Value [K] at 1300m K float principal temp22 Temperature Value [K] at 1450m K float principal temp23 Temperature Value [K] at 1600m K float principal temp24 Temperature Value [K] at 1800m K float principal temp25 Temperature Value [K] at 2000m K float principal temp26 Temperature Value [K] at 2200m K float principal temp27 Temperature Value [K] at 2500m K float principal temp28 Temperature Value [K] at 2800m K float principal temp29 Temperature Value [K] at 3100m K float principal temp3 Temperature Value [K] at 30m K float principal temp30 Temperature Value [K] at 3500m K float principal temp31 Temperature Value [K] at 3900m K float principal temp32 Temperature Value [K] at 4400m K float principal temp33 Temperature Value [K] at 5000m K float principal temp34 Temperature Value [K] at 5600m K float principal temp35 Temperature Value [K] at 6200m K float principal temp36 Temperature Value [K] at 7000m K float principal temp37 Temperature Value [K] at 8000m K float principal temp38 Temperature Value [K] at 9000m K float principal temp39 Temperature Value [K] at 10000m K float principal temp4 Temperature Value [K] at 50m K float principal temp5 Temperature Value [K] at 75m K float principal temp6 Temperature Value [K] at 100m K float principal temp7 Temperature Value [K] at 125m K float principal temp8 Temperature Value [K] at 150m K float principal temp9 Temperature Value [K] at 200m K float principal valid 1 if a valid measurement, 0 otherwise. meta.code.qual short principal

asm.mass_paranalTable containing the ambient measurements of the Multi-Aperture Scintillation Sensor located in Paranal. Included measurements like; vertical profile of the turbulence Cn2(h) (6 layers), Isoplanatic angle, Coherence time, etc. More info at: http://archive.eso.org/wdb/help/eso/ambient_paranal.html#mass "interval" Timebin [s] used for measurement of ambient data sample. s time.interval short principal airmass Airmass: Airmass of observed star. (eng. param.) obs.airMass float alt MASS Turbulence Altitude: Characteristic altitude of the free atmosphere turbulence from MASS integrated profile [m]. (sci. param.) m int principal alt1 Layer Height: Position above ground of the maximum sensitivity in MASS layer 1,2,3,4,5,6 respectively, [m]. (eng. param.) m int alt2 Layer Height: Position above ground of the maximum sensitivity in MASS layer 1,2,3,4,5,6 respectively, [m]. (eng. param.) m int alt3 Layer Height: Position above ground of the maximum sensitivity in MASS layer 1,2,3,4,5,6 respectively, [m]. (eng. param.) m int alt4 Layer Height: Position above ground of the maximum sensitivity in MASS layer 1,2,3,4,5,6 respectively, [m]. (eng. param.) m int alt5 Layer Height: Position above ground of the maximum sensitivity in MASS layer 1,2,3,4,5,6 respectively, [m]. (eng. param.) m int alt6 Layer Height: Position above ground of the maximum sensitivity in MASS layer 1,2,3,4,5,6 respectively, [m]. (eng. param.) m int alterr MASS Turbulence Altitude RMS: Relative RMS on the characteristic altitude of the turbulence in MASS integrated profile [m]. (sci. param.) m float principal dimm_alt MASS-DIMM L0 height: Altitude for layer 0 provided by DIMM. The value is only present if the MASS data have been processed together with DIMM data. If present the value is always 0 [m]. m int principal dimm_turb MASS-DIMM L0 Cn2: Turbulence intensity in MASS layer 0 (DIMM minus MASS) [10**(-15)m**(1/3)]. (sci. param.) 10**(-15)m**(1/3) float principal dimm_turberr MASS-DIMM L0 Cn2 RMS: Turbulence power absolute error for layer 0 provided by DIMM [10**(-15)m**(1/3)]. (sci. param.) 10**(-15)m**(1/3) float principal flux1 Average Flux: Mean K-th flux (K=1,2,3,4) in aperture A,B,C and D respectively [counts/ms]. (eng. param.) kcount.s**(-1) float flux2 Average Flux: Mean K-th flux (K=1,2,3,4) in aperture A,B,C and D respectively [counts/ms]. (eng. param.) kcount.s**(-1) float flux3 Average Flux: Mean K-th flux (K=1,2,3,4) in aperture A,B,C and D respectively [counts/ms]. (eng. param.) kcount.s**(-1) float flux4 Average Flux: Mean K-th flux (K=1,2,3,4) in aperture A,B,C and D respectively [counts/ms]. (eng. param.) kcount.s**(-1) float fluxerr1 Average Flux RMS: Mean K-th flux relative standard deviation(K=1,2,3,4) in aperture A,B,C and D. (eng. param.) kcount.s**(-1) float fluxerr2 Average Flux RMS: Mean K-th flux relative standard deviation(K=1,2,3,4) in aperture A,B,C and D. (eng. param.) kcount.s**(-1) float fluxerr3 Average Flux RMS: Mean K-th flux relative standard deviation(K=1,2,3,4) in aperture A,B,C and D. (eng. param.) kcount.s**(-1) float fluxerr4 Average Flux RMS: Mean K-th flux relative standard deviation(K=1,2,3,4) in aperture A,B,C and D. (eng. param.) kcount.s**(-1) float fracgl MASS-DIMM Cn2 fraction at ground: Fraction of turbulence in the ground layer (GL defined as DIMM minus MASS). (sci. param.) float principal fwhm Free Atmosphere Seeing: Free atmosphere seeing at 500nm/zenith from MASS integrated profile [arcsec]. Free atmosphere is defined to be the portion of the earth's atmosphere in which the effect of the earth's surface friction on the air motion is negligible, and in which the air is usually treated (dynamically) as an ideal fluid. (sci. param.) arcsec instr.obsty.seeing float principal fwhmerr Free Atmosphere Seeing RMS: Relative RMS of the free atmosphere seeing at 500nm/zenith derived from the MASS integrated profile. (sci. param.) arcsec stat.error;instr.obsty.seeing float principal gridsize Number of layers: Number of nodes of the grid of altitudes, in ESO configuration the number of nodes is set to 6. Additional node on the grid at altitude of 0 km is added when DIMM data are used. (eng. param.) short ind1 Scintillation index: Mean K-th index (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD,CD. (eng. param.) float ind10 Scintillation index: Mean K-th index (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD,CD. (eng. param.) float ind2 Scintillation index: Mean K-th index (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD,CD. (eng. param.) float ind3 Scintillation index: Mean K-th index (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD,CD. (eng. param.) float ind4 Scintillation index: Mean K-th index (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD,CD. (eng. param.) float ind5 Scintillation index: Mean K-th index (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD,CD. (eng. param.) float ind6 Scintillation index: Mean K-th index (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD,CD. (eng. param.) float ind7 Scintillation index: Mean K-th index (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD,CD. (eng. param.) float ind8 Scintillation index: Mean K-th index (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD,CD. (eng. param.) float ind9 Scintillation index: Mean K-th index (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD,CD. (eng. param.) float inderr1 Scintillation index RMS: Mean K-th index relative standard deviation (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD and CD. (eng. param.) float inderr10 Scintillation index RMS: Mean K-th index relative standard deviation (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD and CD. (eng. param.) float inderr2 Scintillation index RMS: Mean K-th index relative standard deviation (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD and CD. (eng. param.) float inderr3 Scintillation index RMS: Mean K-th index relative standard deviation (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD and CD. (eng. param.) float inderr4 Scintillation index RMS: Mean K-th index relative standard deviation (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD and CD. (eng. param.) float inderr5 Scintillation index RMS: Mean K-th index relative standard deviation (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD and CD. (eng. param.) float inderr6 Scintillation index RMS: Mean K-th index relative standard deviation (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD and CD. (eng. param.) float inderr7 Scintillation index RMS: Mean K-th index relative standard deviation (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD and CD. (eng. param.) float inderr8 Scintillation index RMS: Mean K-th index relative standard deviation (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD and CD. (eng. param.) float inderr9 Scintillation index RMS: Mean K-th index relative standard deviation (K=1,2,...,10) for aperture A,B,C,D,AB,AC,AD,BC,BD and CD. (eng. param.) float midpoint_date Midpoint (time) of the measurement (UT). time char residual Average norm of residual: Value of averaged norm of residual. float principal secm Second altitude moment: Second altitude moment from MASS integrated profile [m**7/3]. (eng. param.) m**(7/3) double secmerr Second altitude moment RMS: Relative RMS on the second altitude moment from MASS integrated profile. (eng. param.) m**(7/3) float start_date The start time of the measurement. (UT) time.start char principal tau MASS Tau0: Coherence time (weights method) from MASS integrated profile [s]. (sci. param.) s double principal tau0 Coherence time of the turbulence in the whole atmosphere from MASS-DIMM combined profile [s]. (sci. param.) s double principal taudesi DESI Tau0: Coherence time (DESI method) from MASS integrated profile [s]. (eng. param.) s double taudesierr DESI Tau0 RMS: Relative RMS on the coherence time (DESI method) from MASS integrated profile. (eng. param.) s float tauerr MASS Tau0 RMS: Relaltive RMS on the coherence time (weights method) from MASS integrated profile. (sci. param.) s float principal tet MASS Theta0: Isoplanatic angle from MASS integrated profile [arcsec]. (sci. param.) arcsec float principal tet0 MASS-DIMM combined isoplanatic angle of the turbulence in the whole atmosphere [arcsec]. (sci. param.) arcsec float principal teterr MASS Theta0 RMS: Relative RMS on the isoplanatic angle from MASS integrated profile. (sci. param.) arcsec float principal turb Cn2: Turbulence intensity from MASS integrated profile [10**(-15)m**(1/3)]. (sci. param.) 10**(-15)m**(1/3) float principal turb_alt MASS-DIMM Turbulence Altitude: Characteristic altitude of the turbulence in the whole atmosphere from MASS-DIMM combined profile [m]. (sci. param.) m int principal turb_speed MASS-DIMM Turbulence Velocity: Characteristic velocity of the turbulence in the whole atmosphere from MASS-DIMM combined profile [m/s]. (sci. param.) m.s**(-1) phys.veloc.microTurb float principal turb1 Layer Cn2: Turbulence intensity in MASS layer 1,2,3,4,5,6 respectively, [10**(-15)m**(1/3)]. (see corresponding alt1-6 field). (eng. param.) 10**(-15)m**(1/3) float turb2 Layer Cn2: Turbulence intensity in MASS layer 1,2,3,4,5,6 respectively, [10**(-15)m**(1/3)]. (see corresponding alt1-6 field). (eng. param.) 10**(-15)m**(1/3) float turb3 Layer Cn2: Turbulence intensity in MASS layer 1,2,3,4,5,6 respectively, [10**(-15)m**(1/3)]. (see corresponding alt1-6 field). (eng. param.) 10**(-15)m**(1/3) float turb4 Layer Cn2: Turbulence intensity in MASS layer 1,2,3,4,5,6 respectively, [10**(-15)m**(1/3)]. (see corresponding alt1-6 field). (eng. param.) 10**(-15)m**(1/3) float turb5 Layer Cn2: Turbulence intensity in MASS layer 1,2,3,4,5,6 respectively, [10**(-15)m**(1/3)]. (see corresponding alt1-6 field). (eng. param.) 10**(-15)m**(1/3) float turb6 Layer Cn2: Turbulence intensity in MASS layer 1,2,3,4,5,6 respectively, [10**(-15)m**(1/3)]. (see corresponding alt1-6 field). (eng. param.) 10**(-15)m**(1/3) float turberr Cn2 RMS: Relative RMS on the turbulence intensity from MASS integrated profile. (sci. param.) 10**(-15)m**(1/3) stat.error float principal turberr1 Layer Cn2 RMS: Relative RMS on the turbulence intensity in MASS layer 1,2,3,4,5,6 respectively. (see corresponding alt1-6 field). (eng. param.) 10**(-15)m**(1/3) float turberr2 Layer Cn2 RMS: Relative RMS on the turbulence intensity in MASS layer 1,2,3,4,5,6 respectively. (see corresponding alt1-6 field). (eng. param.) 10**(-15)m**(1/3) float turberr3 Layer Cn2 RMS: Relative RMS on the turbulence intensity in MASS layer 1,2,3,4,5,6 respectively. (see corresponding alt1-6 field). (eng. param.) 10**(-15)m**(1/3) float turberr4 Layer Cn2 RMS: Relative RMS on the turbulence intensity in MASS layer 1,2,3,4,5,6 respectively. (see corresponding alt1-6 field). (eng. param.) 10**(-15)m**(1/3) float turberr5 Layer Cn2 RMS: Relative RMS on the turbulence intensity in MASS layer 1,2,3,4,5,6 respectively. (see corresponding alt1-6 field). (eng. param.) 10**(-15)m**(1/3) float turberr6 Layer Cn2 RMS: Relative RMS on the turbulence intensity in MASS layer 1,2,3,4,5,6 respectively. (see corresponding alt1-6 field). (eng. param.) 10**(-15)m**(1/3) float turbfwhm MASS-DIMM Seeing: it includes and corrects the DIMM seeing taking into consideration the actual Cn2 profile. In principle more accurate than the DIMM seeing but is only available when MASS produces valid data, i.e. in photometric sky only. If DIMM data is missing the value is the same as the free atmospheric seeing [arcsec]. Note: The DIMM seeing is the observatory reference seeing, given that DIMM can operate in an extended range of atmospheric conditions which overlap science operation. (sci. param.) arcsec instr.obsty.seeing float principal valid 1 if a valid measurement, 0 otherwise. meta.code.qual short principal

asm.meteo_apexTable containing the ambient measurements of the APEX weather station, which is located on a free-standing 6m high tower located about 50m West of the APEX telescope. The sensors are from Vaisala, except the temperature sensor, which is from Stego. The APEX radiometer was built by Radiometer Physics GmbH (MeckenHeim, Germany). Time coverage: January 1st 2006 onwards. More info at: https://archive.eso.org/wdb/help/eso/meteo_apex.html azimuth Telescope azimuth [deg] (horizontal coord. sys.): Telescope azimuth and elevation are provided to determine the direction to which the water vapour radiometer (located in the APEX Cassegrain cabin) was pointing at the time of the PWV measurement. The measurement itself has been corrected towards zenith. Note that the telescope park position is Az=180, El=15. deg pos.az.azi float principal controlboxtemperature Control Box Temperature: it is measured inside the electronics box on the weather tower. This box is heated to around 20 Celsius by a special probe to ensure the proper functionality of weather station [degC]. Celsius phys.temperature;obs.atmos;time.end float principal dewpoint Dew Temperature: ambient dew temperature calculated from humidity and ambient temperature [degC]. Celsius phys.temperature;obs.atmos;time.end float principal elevation Telescope elevation [deg] (horizontal coord. sys.): Telescope azimuth and elevation are provided to determine the direction to which the water vapour radiometer (located in the APEX Cassegrain cabin) was pointing at the time of the PWV measurement. The measurement itself has been corrected towards zenith. Note that the telescope park position is Az=180, El=15. deg pos.az.alt float principal humidity Relative Humidity: instantaneous ambient relative humidity [%]. % float principal pressure Air Pressure: instantaneous ambient baromeric air pressure [hPa]. hPa phys.pressure;obs.atmos;time.end float principal pwv Water Vapour: the Precipitable Water Vapour (PWV) is determined from the observed radiometer sky brightness temperature using the ATM library assuming a mean atmosphere for Chajnantor [mm]. (sci. param.) mm float principal shutter Shutter: if the APEX shutter is closed, the APEX radiometer does not see the sky. The shutter is closed as a precaution in case of bad weather when snow or ice may build up. Hence, the PWV values are somewhat biased against the worst weather conditions. char principal skyTB06 Sky Brightness Temperature: instantaneous sky brightness temperature (as of 2013) in double side band channels centered on the 183.31 GHz line of H2O at off-set frequency 0.6 GHz with 0.2 GHz bandwidth [K]. K instr.skyTemp;time.end float principal skytb13_upto2012 Sky Brightness Temperature: instantaneous sky brightness temperature (2006 to 2012) in double side band channels centered on the 183.31 GHz line of H2O at off-set frequency 1.3 GHz with 0.5 GHz bandwidth [K]. K instr.skyTemp;time.end float principal skyTB15 Sky Brightness Temperature: instantaneous sky brightness temperature (as of 2013) in double side band channels centered on the 183.31 GHz line of H2O at off-set frequency 1.5 GHz with 0.2 GHz bandwidth [K]. K instr.skyTemp;time.end float principal skyTB25 Sky Brightness Temperature: instantaneous sky brightness temperature (as of 2013) in double side band channels centered on the 183.31 GHz line of H2O at off-set frequency 2.5 GHz with 0.2 GHz bandwidth [K]. K instr.skyTemp;time.end float principal skyTB35 Sky Brightness Temperature: instantaneous sky brightness temperature (as of 2013) in double side band channels centered on the 183.31 GHz line of H2O at off-set frequency 3.5 GHz with 0.2 GHz bandwidth [K]. K instr.skyTemp;time.end float principal skytb42_upto2012 Sky Brightness Temperature: instantaneous sky brightness temperature (2006 to 2012) in double side band channels centered on the 183.31 GHz line of H2O at off-set frequency 4.2 GHz with 1.0 GHz bandwidth [K]. K instr.skyTemp;time.end float principal skyTB50 Sky Brightness Temperature: instantaneous sky brightness temperature (as of 2013) in double side band channels centered on the 183.31 GHz line of H2O at off-set frequency 5.0 GHz with 0.4 GHz bandwidth [K]. K instr.skyTemp;time.end float principal skytb65_upto2012 Sky Brightness Temperature: instantaneous sky brightness temperature (2006 to 2012) in double side band channels centered on the 183.31 GHz line of H2O at off-set frequency 6.5 GHz with 1.0 GHz bandwidth [K]. K instr.skyTemp;time.end float principal skyTB75 Sky Brightness Temperature: instantaneous sky brightness temperature (as of 2013) in double side band channels centered on the 183.31 GHz line of H2O at off-set frequency 7.5 GHz with 1.0 GHz bandwidth [K]. K instr.skyTemp;time.end float principal start_date Time of the measurement. time.start char principal status Status: Weather station status. char principal temperature Ambient Temperature: instantaneous ambient temperature [degC]. Celsius phys.temperature;obs.atmos;time.end float principal valid 1 if a valid measurement, 0 otherwise. meta.code.qual short principal winddirection Wind Direction (0/360): instantaneous wind direction counted clockwise from North (standard) [deg]. deg pos.azimuth;obs.atmos.wind short principal windspeed Wind Speed: instantaneous wind speed [m.s**(-1)]. m.s**(-1) phys.veloc;obs.atmos.wind;time.end float principal

asm.meteo_lasillaTable containing the ambient measurements of the Vaisala METEOrological station, which was installed at La Silla in February 1985. It includes, on a 30 m high mast, a number of sensors. The following measurements are provided: Wind speed and direction, Temperature, Humidity at different levels. Time coverage: January 1st 1994 onwards. More info at: http://archive.eso.org/wdb/help/eso/ambient_lasilla.html#meteo integration Timebin [s] used for measurement of ambient data sample. s time.interval short principal midpoint_date Midpoint (time) of the measurement. time char principal presqnh Air Pressure Normalised: 1 minute average pressure normalised to sea level [hPa]. (sci. param.) hPa phys.pressure;obs.atmos;stat.mean float principal press_2m Air Pressure: Temporal (1 minute) mean of observatory site ambient baromeric air pressure measured at 2m above the ground during measurement period [hPa]. (sci. param.) hPa phys.pressure;obs.atmos;stat.mean float principal rhum_2m Relative Humidity: Temporal (1 minute) mean of observatory site ambient relative humidity measured at sensor position 2m above ground during measurement period [%]. (sci. param.) % short principal start_date The start time of the measurement. time.start char principal temp_0m Ambient Temperature: Temporal (1 minute) mean of site ambient temperature measured at 0m above ground [degC]. (sci. param.) Celsius phys.temperature;obs.atmos;stat.mean float principal temp_2m Ambient Temperature: Temporal (1 minute) mean of site ambient temperature measured at 2m above ground [degC]. (sci. param.) Celsius phys.temperature;obs.atmos;stat.mean float principal temp_30m Ambient Temperature: Temporal (1 minute) mean of site ambient temperature measured at 30m above ground [degC]. (sci. param.) Celsius phys.temperature;obs.atmos;stat.mean float principal tempdew_2m Dew Temperature: Temporal (1 minute) mean of observatory site ambient dew temperature measured at sensor position 2m above ground during measurement period [degC]. (sci. param.) Celsius phys.temperature;obs.atmos;stat.mean float principal wind_dir_10m Wind Direction (0/360): 1 minute average wind direction at 10m above ground counted clockwise from North (standard) [deg]. (sci. param.) deg pos.azimuth;obs.atmos.wind short principal wind_dir_30m Wind Direction (0/360): 1 minute average wind direction at 30m above ground counted clockwise from North (standard) [deg]. (sci. param.) deg pos.azimuth;obs.atmos.wind short principal wind_speed_10m Wind Speed: 1 minute average wind speed at sensor position 10m above ground [m.s**(-1)]. (sci. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.mean float principal wind_speed_30m Wind Speed: 1 minute average wind speed at sensor position 30m above ground [m.s**(-1)]. (sci. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.mean float principal

asm.meteo_paranalTable containing the ambient measurements of the Vaisala METEOrological station, which was installed in Paranal in October 1984 and upgraded in June 1998. It includes, on a 30 m high mast, a number of sensors. The following measurements are provided: Wind speed and direction, Temperature, Humidity, Particle Count at different levels. Time coverage: August 1998 onwards. More info at: http://archive.eso.org/wdb/help/eso/ambient_paranal.html#meteo integration Timebin [s] used for measurement of ambient data sample. s time.interval short principal midpoint_date Midpoint (time) of the measurement. time char principal presqnh Air Pressure Normalised: 1 minute average pressure normalised to sea level [hPa]. (sci. param.) hPa phys.pressure;obs.atmos;stat.mean float principal presqnh_dev Air Pressure Normalised RMS: 1 minute RMS pressure normalized to sea level [hPa]. (eng. param.) hPa stat.stdev;phys.pressure;obs.atmos float presqnh_inst Air Pressure Normalised instantaneous: Pressure normalized to sea level at the end of the averaging period [hPa]. (eng. param.) hPa phys.pressure;obs.atmos;time.end float presqnh_max Air Pressure Normalised max: 1 minute maximum pressure normalized to sea level [hPa]. (eng. param.) hPa phys.pressure;obs.atmos;stat.max float presqnh_min Air Pressure Normalised min: 1 minute minimum pressure normalized to sea level [hPa]. (eng. param.) hPa phys.pressure;obs.atmos;stat.min float press_0m Air Pressure: Temporal (1 minute) mean of observatory site ambient baromeric air pressure measured at 0m above the VLT platform during measurement period [hPa]. (sci. param.) hPa phys.pressure;obs.atmos;stat.mean float principal press_0m_dev Air Pressure RMS: 1 minute RMS surface pressure variation at 0m above the VLT platform [hPa]. (eng. param.) hPa stat.stdev;phys.pressure;obs.atmos float press_0m_inst Air Pressure instantaneous: instant value measured at 0m above the VLT platform at the end of the averaging period [hPa]. (eng. param.) hPa phys.pressure;obs.atmos;time.end float press_0m_max Air Pressure max: 1 minute maximum surface pressure at 0m above the VLT platform [hPa]. (eng. param.) hPa phys.pressure;obs.atmos;stat.max float press_0m_min Air Pressure min: 1 minute minimum surface pressure at 0m above the VLT platform [hPa]. (eng. param.) hPa phys.pressure;obs.atmos;stat.min float prestrend_0m Air Pressure 3h trend: Surface pressure trend over 3 hours at 0m above the VLT platform [hPa]. (eng. param.) hPa phys.pressure;obs.atmos;stat.mean float rain_m20m Rain intensity: 1 minute average rain percentage measured 20m below the VLT platform [%]. (sci. param.) % short principal rain_m20m_dev Rain Intensity RMS: 1 minute RMS rain percentage 20m below the VLT platform [%]. (eng. param.) % short rain_m20m_inst Rain Intensity instantaneous : Rain percentage at 20m below the VLT platform at the end of the averaging period [%]. (eng. param.) % short rain_m20m_max Rain Intensity max: 1 minute maximum rain percentage 20m below the VLT platform [%]. (eng. param.) % short rain_m20m_min Rain Intensity min: 1 minute minimum rain percentage 20m below the VLT platform [%]. (eng. param.) % short rhum_2m Relative Humidity: Temporal (1 minute) mean of observatory site ambient relative humidity measured at sensor position 2m above the VLT platform during measurement period [%]. (sci. param.) % short principal rhum_2m_dev Humidity RMS: 1 minute RMS relative humidity measured at 2m above the VLT platform [%]. (eng. param.) % short rhum_2m_inst Humidity instantaneous: instant value measured at 2m above the VLT platform at the end of the averaging period [%]. (eng. param.) % short rhum_2m_max Humidity max: 1 minute maximum relative humidity measured at 2m above the VLT platform [%]. (eng. param.) % short rhum_2m_min Humidity min: 1 minute minimum relative humidity measured at 2m above the VLT platform [%]. (eng. param.) % short rhum_30m Relative Humidity: Temporal (1 minute) mean of observatory site ambient relative humidity measured at sensor position 30m above the VLT platform during measurement period [%]. (sci. param.) % short principal rhum_30m_dev Humidity RMS: 1 minute RMS relative humidity measured at 30m above the VLT platform [%]. (eng. param.) % short rhum_30m_inst Humidity instantaneous: instant value measured at 30m above the VLT platform at the end of the averaging period [%]. (eng. param.) % short rhum_30m_max Humidity max: 1 minute maximum relative humidity measured at 30m above the VLT platform [%]. (eng. param.) % short rhum_30m_min Humidity min: 1 minute minimum relative humidity measured at 30m above the VLT platform [%]. (eng. param.) % short rhum_m20m Relative Humidity: Temporal (1 minute) mean of observatory site ambient relative humidity measured at sensor position 20m below the VLT platform during measurement period [%]. (sci. param.) % short principal rhum_m20m_dev Humidity RMS: 1 minute RMS relative humidity measured at 20m below the VLT platform [%]. (eng. param.) % short rhum_m20m_inst Humidity instantaneous: instant value measured at 20m below the VLT platform at the end of the averaging period [%]. (eng. param.) % short rhum_m20m_max Humidity max: 1 minute maximum relative humidity measured at 20m below the VLT platform [%]. (eng. param.) % short rhum_m20m_min Humidity min: 1 minute minimum relative humidity measured at 20m below the VLT platform [%]. (eng. param.) % short start_date The start time of the measurement. time.start char principal temp_0m Ambient Temperature: Temporal (1 minute) mean of site ambient temperature measured at 0m above the VLT platform [degC]. (sci. param.) Celsius phys.temperature;obs.atmos;stat.mean float principal temp_0m_dev Air Temperature RMS: 1 minute RMS air temperature variation at 0m above the VLT platform below VLT platform [degC]. (eng. param.) Celsius stat.stdev;phys.temperature;obs.atmos float temp_0m_inst Air Temperature Instantaneous : instant value measured at 0m above the VLT platform measured at the end of the averaging period [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;time.end float temp_0m_max Air Temperature max: 1 minute maximum air temperature at 0m above the VLT platform [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;stat.max float temp_0m_min Air Temperature min: 1 minute minimum air temperature at 0m above the VLT platform [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;stat.min float temp_2m Ambient Temperature: Temporal (1 minute) mean of site ambient temperature measured at 2m above the VLT platform [degC]. (sci. param.) Celsius phys.temperature;obs.atmos;stat.mean float principal temp_2m_dev Air Temperature RMS: 1 minute RMS air temperature variation at 2m above the VLT platform below VLT platform [degC]. (eng. param.) Celsius stat.stdev;phys.temperature;obs.atmos float temp_2m_inst Air Temperature Instantaneous : instant value measured at 2m above the VLT platform measured at the end of the averaging period [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;time.end float temp_2m_max Air Temperature max: 1 minute maximum air temperature at 2m above the VLT platform [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;stat.max float temp_2m_min Air Temperature min: 1 minute minimum air temperature at 2m above the VLT platform [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;stat.min float temp_30m Ambient Temperature: Temporal (1 minute) mean of site ambient temperature measured at 30m above the VLT platform [degC]. (sci. param.) Celsius phys.temperature;obs.atmos;stat.mean float principal temp_30m_dev Air Temperature RMS: 1 minute RMS air temperature variation at 30m above the VLT platform below VLT platform [degC]. (eng. param.) Celsius stat.stdev;phys.temperature;obs.atmos float temp_30m_inst Air Temperature Instantaneous : instant value measured at 30m above the VLT platform measured at the end of the averaging period [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;time.end float temp_30m_max Air Temperature max: 1 minute maximum air temperature at 30m above the VLT platform [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;stat.max float temp_30m_min Air Temperature min: 1 minute minimum air temperature at 30m above the VLT platform [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;stat.min float temp_m20m Ambient Temperature: Temporal (1 minute) mean of site ambient temperature measured at 20m below the VLT platform [degC]. (sci. param.) Celsius phys.temperature;obs.atmos;stat.mean float principal temp_m20m_dev Air Temperature RMS: 1 minute RMS air temperature variation 20m below the VLT platform [degC]. (eng. param.) Celsius stat.stdev;phys.temperature;obs.atmos float temp_m20m_inst Air Temperature Instantaneous : instant value measured at 20m below the VLT platform measured at the end of the averaging period [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;time.end float temp_m20m_max Air Temperature max: 1 minute maximum air temperature 20m below the VLT platform [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;stat.max float temp_m20m_min Air Temperature min: 1 minute minimum air temperature 20m below the VLT platform [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;stat.min float tempdew_2m Dew Temperature: Temporal (1 minute) mean of observatory site ambient dew temperature measured at sensor position 2m above the VLT platform during measurement period [degC]. (sci. param.) Celsius phys.temperature;obs.atmos;stat.mean float principal tempdew_2m_dev Dew Temperature RMS: 1 minute RMS dew temperature at 2m above the VLT platform [degC]. (eng. param.) Celsius stat.stdev;phys.temperature;obs.atmos float tempdew_2m_inst Dew Temperature instantaneous: instant value measured at 2m above the VLT platform measured at the end of the averaging period [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;time.end float tempdew_2m_max Dew Temperature max: 1 minute maximum dew temperature at 2m above the VLT platform [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;stat.max float tempdew_2m_min Dew Temperature min: 1 minute minimum dew temperature at 2m above the VLT platform [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;stat.min float tempdew_30m Dew Temperature: Temporal (1 minute) mean of observatory site ambient dew temperature measured at sensor position 30m above the VLT platform during measurement period [degC]. (sci. param.) Celsius phys.temperature;obs.atmos;stat.mean float principal tempdew_30m_dev Dew Temperature RMS: 1 minute RMS dew temperature at 30m above the VLT platform [degC]. (eng. param.) Celsius stat.stdev;phys.temperature;obs.atmos float tempdew_30m_inst Dew Temperature instantaneous: instant value measured at 30m above the VLT platform measured at the end of the averaging period [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;time.end float tempdew_30m_max Dew Temperature max: 1 minute maximum dew temperature at 30m above the VLT platform [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;stat.max float tempdew_30m_min Dew Temperature min: 1 minute minimum dew temperature at 30m above the VLT platform [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;stat.min float tempdew_m20m Dew Temperature: Temporal (1 minute) mean of observatory site ambient dew temperature measured at sensor position 20m below the VLT platform during measurement period [degC]. (sci. param.) Celsius phys.temperature;obs.atmos;stat.mean float principal tempdew_m20m_dev Dew Temperature RMS: 1 minute RMS dew temperature at 20m below the VLT platform [degC]. (eng. param.) Celsius stat.stdev;phys.temperature;obs.atmos float tempdew_m20m_inst Dew Temperature instantaneous: instant value measured at 20m below the VLT platform measured at the end of the averaging period [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;time.end float tempdew_m20m_max Dew Temperature max: 1 minute maximum dew temperature at 20m below the VLT platform [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;stat.max float tempdew_m20m_min Dew Temperature min: 1 minute minimum dew temperature at 20m below the VLT platform [degC]. (eng. param.) Celsius phys.temperature;obs.atmos;stat.min float valid 1 if a valid measurement, 0 otherwise. meta.code.qual short principal wind_dir_10m Wind Direction (0/360): 1 minute average wind direction at 10m above the VLT platform counted clockwise from North (standard) [deg]. (sci. param.) deg pos.azimuth;obs.atmos.wind short principal wind_dir_10m_180 Wind Direction (180/-180): 1 minute average wind direction at 10m and 10m above the VLT platform counted clockwise from North (with 180 degree negative offset for display purposes) [deg]. (sci. param.) deg pos.azimuth;obs.atmos.wind short principal wind_dir_10m_180_inst Wind Direction instantaneous (180/-180): wind direction at 10m above the VLT platform, counted clockwise from North (with 180 degree negative offset for display purposes), at the end of the averaging period [deg]. (eng. param.) deg pos.azimuth;obs.atmos.wind;time.end short wind_dir_10m_180_max Wind Direction max (180/-180): 1 minute maximum wind direction at 10m above the VLT platform counted clockwise from North (with 180 degree negative offset for display purposes) [deg]. (eng. param.) deg pos.azimuth;obs.atmos.wind;stat.max short wind_dir_10m_180_min Wind Direction min (180/-180): 1 minute minimum wind direction at 10m above the VLT platform counted clockwise from North (with 180 degree negative offset for display purposes) [deg]. (eng. param.) deg pos.azimuth;obs.atmos.wind;stat.min short wind_dir_10m_dev Wind Direction RMS: 1 minute RMS air wind direction at 10m above the VLT platform [deg]. (eng. param.) deg stat.stdev;pos.azimuth;obs.atmos.wind short wind_dir_10m_inst Wind Direction instantaneous (0/360): wind direction at 10m above the VLT platform, counted clockwise from North (standard), at the end of the averaging period [deg]. (eng. param.) deg pos.azimuth;obs.atmos.wind;time.end short wind_dir_10m_max Wind Direction max (0/360): 1 minute maximum wind direction at 10m above the VLT platform counted clockwise from North (standard) [deg]. (eng. param.) deg pos.azimuth;obs.atmos.wind;stat.max short wind_dir_10m_min Wind Direction min (0/360): 1 minute minimum wind direction at 10m above the VLT platform counted clockwise from North (standard) [deg]. (eng. param.) deg pos.azimuth;obs.atmos.wind;stat.min short wind_dir_30m Wind Direction (0/360): 1 minute average wind direction at 30m above the VLT platform counted clockwise from North (standard) [deg]. (sci. param.) deg pos.azimuth;obs.atmos.wind short principal wind_dir_30m_180 Wind Direction (180/-180): 1 minute average wind direction at 30m above the VLT platform counted clockwise from North (with 180 degree negative offset for display purposes) [deg]. (sci. param.) deg pos.azimuth;obs.atmos.wind short principal wind_dir_30m_180_inst Wind Direction instantaneous (180/-180): wind direction at 30m above the VLT platform, counted clockwise from North (with 180 degree negative offset for display purposes), at the end of the averaging period [deg]. (eng. param.) deg pos.azimuth;obs.atmos.wind;time.end short wind_dir_30m_180_max Wind Direction max (180/-180): 1 minute maximum wind direction at 30m above the VLT platform counted clockwise from North (with 180 degree negative offset for display purposes) [deg]. (eng. param.) deg pos.azimuth;obs.atmos.wind;stat.max short wind_dir_30m_180_min Wind Direction min (180/-180): 1 minute minimum wind direction at 30m above the VLT platform counted clockwise from North (with 180 degree negative offset for display purposes) [deg]. (eng. param.) deg pos.azimuth;obs.atmos.wind;stat.min short wind_dir_30m_dev Wind Direction RMS: 1 minute RMS air wind direction at 30m above the VLT platform counted clockwise from North (standard) [deg]. (eng. param.) deg stat.stdev;pos.azimuth;obs.atmos.wind short wind_dir_30m_inst Wind Direction instantaneous (0/360): wind direction at 30m above the VLT platform, counted clockwise from North (standard), at the end of the averaging period [deg]. (eng. param.) deg pos.azimuth;obs.atmos.wind;time.end short wind_dir_30m_max Wind Direction max (0/360): 1 minute maximum wind direction at 30m above the VLT platform counted clockwise from North (standard) [deg]. (eng. param.) deg pos.azimuth;obs.atmos.wind;stat.max short wind_dir_30m_min Wind Direction min (0/360): 1 minute minimum wind direction at 30m above the VLT platform counted clockwise from North (standard) [deg]. (eng. param.) deg pos.azimuth;obs.atmos.wind;stat.min short wind_speed_10m Wind Speed: 1 minute average wind speed at sensor position 10m [m.s**(-1)]. (sci. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.mean float principal wind_speed_10m_dev Wind Speed RMS: 1 minute RMS wind speed at 10m above ground [m.s**(-1)]. (eng. param.) m.s**(-1) stat.stdev;phys.veloc;obs.atmos.wind float wind_speed_10m_inst Wind Speed instantaneous : instant value measured at 10m above the VLT platform, at the end of the averaging period [m.s**(-1)]. (eng. param.) m.s**(-1) phys.veloc;obs.atmos.wind;time.end float wind_speed_10m_max Wind Speed max: 1 minute maximum wind speed at 10m above ground [m.s**(-1)]. (eng. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.max float wind_speed_10m_min Wind Speed min: 1 minute minimum wind speed at 10m above ground [m.s**(-1)]. (eng. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.min float wind_speed_30m Wind Speed: 1 minute average wind speed at sensor position 30m above the VLT platform [m.s**(-1)]. (sci. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.mean float principal wind_speed_30m_dev Wind Speed RMS: 1 minute RMS wind speed at 30m above the VLT platform [m.s**(-1)]. (eng. param.) m.s**(-1) stat.stdev;phys.veloc;obs.atmos.wind float wind_speed_30m_inst Wind Speed instantaneous : instant value measured at 30m above the VLT platform, at the end of the averaging period [m.s**(-1)]. (eng. param.) m.s**(-1) phys.veloc;obs.atmos.wind;time.end float wind_speed_30m_max Wind Speed max: 1 minute maximum wind speed at 30m above the VLT platform [m.s**(-1)]. (eng. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.max float wind_speed_30m_min Wind Speed min: 1 minute minimum wind speed at 30m above the VLT platform [m.s**(-1)]. (eng. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.min float wind_speedu_20m Wind Speed component U: Temporal mean of observatory site ambient wind speed U vector component, where U is horizontal and points to 330 degree measured at sensor position 20m above ground during measurement period [m.s**(-1)]. (sci. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.mean float principal wind_speedu_20m_dev Wind Speed component U RMS: 1 minute RMS horizontal wind speed U component (into 330 degree) at 20m above ground [m.s**(-1)]. (eng. param.) m.s**(-1) stat.stdev;phys.veloc;obs.atmos.wind float wind_speedu_20m_inst Wind Speed component U instantaneous: Horizontal wind speed U component (into 330 degree) at 20m above ground at the end of the averaging period [m.s**(-1)]. (eng. param.) m.s**(-1) phys.veloc;obs.atmos.wind;time.end float wind_speedu_20m_max Wind Speed component U max: 1 minute maximum horizontal wind speed U component (into 330 degree) at 20m above ground [m.s**(-1)]. (eng. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.max float wind_speedu_20m_min Wind Speed component U min: 1 minute minimum horizontal wind speed U component (into 330 degree) at 20m above ground [m.s**(-1)]. (eng. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.min float wind_speedv_20m Wind Speed component V: Temporal mean of observatory site ambient wind speed V vector component, where V is horizontal and points to 240 degree measured at sensor position 20m above ground during measurement period [m.s**(-1)]. (sci. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.mean float principal wind_speedv_20m_dev Wind Speed component V RMS: 1 minute RMS horizontal wind speed V component (into 240 degree) at 20m above ground [m.s**(-1)]. (eng. param.) m.s**(-1) stat.stdev;phys.veloc;obs.atmos.wind float wind_speedv_20m_inst Wind Speed component V instantaneous: Horizontal wind speed V component (into 240 degree) at 20m above ground at the end of the averaging period [m.s**(-1)]. (eng. param.) m.s**(-1) phys.veloc;obs.atmos.wind;time.end float wind_speedv_20m_max Wind Speed component V max: 1 minute maximum horizontal wind speed V component (into 240 degree) at 20m above ground [m.s**(-1)]. (eng. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.max float wind_speedv_20m_min Wind Speed component V min: 1 minute minimum horizontal wind speed V component (into 240 degree) at 20m above ground [m.s**(-1)]. (eng. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.min float wind_speedw_20m Wind Speed component W: Temporal mean of observatory site ambient wind speed W vector component, where W is vertically pointing upwards, measured at sensor position 20m above ground during measurement period [m.s**(-1)]. (sci. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.mean float principal wind_speedw_20m_dev Wind Speed component W RMS: 1 minute RMS vertical wind speed W component at 20m above ground [m.s**(-1)]. (eng. param.) m.s**(-1) stat.stdev;phys.veloc;obs.atmos.wind float wind_speedw_20m_inst Wind Speed component W instantaneous: Vertical wind speed W component at 20m above ground at the end of the averaging period [m.s**(-1)]. (eng. param.) m.s**(-1) phys.veloc;obs.atmos.wind;time.end float wind_speedw_20m_max Wind Speed component W max: 1 minute maximum vertical wind speed W component at 20m above ground [m.s**(-1)]. (eng. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.max float wind_speedw_20m_min Wind Speed component W min: 1 minute minimum vertical wind speed W component at 20m above ground [m.s**(-1)]. (eng. param.) m.s**(-1) phys.veloc;obs.atmos.wind;stat.min float

asm.meteo_vistaTable containing the ambient measurements of the Vaisala METEOrological station, which was installed on the VISTA platform in May 2025. The following measurements are provided: Humidity and Pressure at 10m, Wind speed and direction at 30m above ground. Time coverage: June 2025 onwards. More info at: https://archive.eso.org/wdb/help/eso/ambient_paranal.html#meteo_vista press_10m Barometric Pressure: 20-Minutes average value measured at 10m above the VISTA platform [hPa]. hPa phys.pressure;obs.atmos;stat.mean float principal press_10m_inst Barometric Pressure instantaneous: instant value measured at 10m above the VISTA platform at the end of the averaging period [hPa]. hPa phys.pressure;obs.atmos;time.end float principal press_10m_max Barometric Pressure max: 20-Minutes maximum value measured at 10m above the VISTA platform [hPa]. hPa phys.pressure;obs.atmos;stat.max float principal press_10m_min Barometric Pressure min: 20-Minutes minimum value measured at 10m above the VISTA platform [hPa] . hPa phys.pressure;obs.atmos;stat.min float principal press_integration Timebin [s] used for measurement of pressure data sample. s time.interval short principal press_valid 1 if a valid measurement of pressure, 0 otherwise. meta.code.qual short principal rhum_10m Relative Humidity: One-Minute average value measured at 10m above the VISTA platform [%]. % obs.atmos.humidity;arith.ratio;stat.mean short principal rhum_10m_inst Relative Humidity instantaneous: instant value measured at 10m above the VISTA platform at the end of the averaging period [%]. % obs.atmos.humidity;arith.ratio;time.end short principal rhum_10m_max Relative Humidity max: One-Minute maximum value measured at 10m above the VISTA platform [%]. % obs.atmos.humidity;arith.ratio;stat.max short principal rhum_10m_min Relative Humidity min: One-Minute minimum value measured at 10m above the VISTA platform [%]. % obs.atmos.humidity;arith.ratio;stat.min short principal start_date The start time of the measurement. time.start char principal wind_dir_30m Wind Direction (0/360): One-Minute average value measured at 30m above the VISTA platform counted clockwise from North (standard) [deg]. deg pos.azimuth;obs.atmos.wind;stat.mean short principal wind_dir_30m_inst Wind Direction instantaneous (0/360): instant value measured at 30m above the VISTA platform counted clockwise from North (standard) at the end of the averaging period [deg]. deg pos.azimuth;obs.atmos.wind;time.end short principal wind_dir_30m_max Wind Direction max (0/360): One-Minute maximum value measured at 30m above the VISTA platform counted clockwise from North (standard) [deg]. deg pos.azimuth;obs.atmos.wind;stat.max short principal wind_dir_30m_min Wind Direction min (0/360): One-Minute minimum value measured at 30m above the VISTA platform counted clockwise from North (standard) [deg]. deg pos.azimuth;obs.atmos.wind;stat.min short principal wind_rhum_integration Timebin [s] used for measurement of humidity and wind data sample. s time.interval short principal wind_rhum_valid 1 if a valid measurement of wind and humidity, 0 otherwise. meta.code.qual short principal wind_speed_30m Wind Speed: One-Minute average value measured at 30m above the VISTA platform [m.s**(-1)]. m.s**(-1) phys.veloc;obs.atmos.wind;stat.mean float principal wind_speed_30m_inst Wind Speed instantaneous: instant value measured at 30m above the VISTA platform at the end of the averaging period [m.s**(-1)]. m.s**(-1) phys.veloc;obs.atmos.wind;time.end float principal wind_speed_30m_max Wind Speed max: One-Minute maximum value measured at 30m above the VISTA platform [m.s**(-1)]. m.s**(-1) phys.veloc;obs.atmos.wind;stat.max float principal wind_speed_30m_min Wind Speed min: One-Minute minimum value measured at 30m above the VISTA platform [m.s**(-1)]. m.s**(-1) phys.veloc;obs.atmos.wind;stat.min float principal

asm.slodar_paranalTable containing the ambient measurements of the SLOpe Detection And Ranging (SLODAR). SLODAR is optimised to measure the vertical profile of the surface layer of turbulence, in the first 100m above the site. The data is relevant to modelling and understanding the imaging performance of the VLT, both with and without adaptive optical correction. Time coverage: 2016-APR-04 12:00:00 UTC onwards. More info at: http://archive.eso.org/wdb/help/eso/ambient_paranal.html#slodar "interval" Timebin [s] used for measurement of ambient data sample s time.interval short principal airmass Airmass: SLODAR Airmass (eng. param.). obs.airMass float alt Telescope pointing: Telescope elevation [deg]. (setup param.) deg pos.az.alt float principal az Telescope pointing: Telescope azimuth [deg]. (setup param.) deg pos.az.azi float principal beta Kolmogorov criterium: Power law exponent of power spectrum density (11/3 = Kolmogorov turbulence). Data taken in clearly non-Kolmogorov conditions (<0.4) are not validated. (eng. param.) float cnsqs_uns Cn2 Unresolved: Unresolved turbulence profile Cn2 [10**(-15)m**(1/3)]. (eng. param.) 10**(-15)m**(1/3) float cnsqs1 Cn2 profile in each layer: Turbulence profile Cn2 in layer 1,2,3,4,5,6,7 and 8 respectively, [10**(-15)m**(1/3)]. (eng. param.) 10**(-15)m**(1/3) float cnsqs2 Cn2 profile in each layer: Turbulence profile Cn2 in layer 1,2,3,4,5,6,7 and 8 respectively, [10**(-15)m**(1/3)]. (eng. param.) 10**(-15)m**(1/3) float cnsqs3 Cn2 profile in each layer: Turbulence profile Cn2 in layer 1,2,3,4,5,6,7 and 8 respectively, [10**(-15)m**(1/3)]. (eng. param.) 10**(-15)m**(1/3) float cnsqs4 Cn2 profile in each layer: Turbulence profile Cn2 in layer 1,2,3,4,5,6,7 and 8 respectively, [10**(-15)m**(1/3)]. (eng. param.) 10**(-15)m**(1/3) float cnsqs5 Cn2 profile in each layer: Turbulence profile Cn2 in layer 1,2,3,4,5,6,7 and 8 respectively, [10**(-15)m**(1/3)]. (eng. param.) 10**(-15)m**(1/3) float cnsqs6 Cn2 profile in each layer: Turbulence profile Cn2 in layer 1,2,3,4,5,6,7 and 8 respectively, [10**(-15)m**(1/3)]. (eng. param.) 10**(-15)m**(1/3) float cnsqs7 Cn2 profile in each layer: Turbulence profile Cn2 in layer 1,2,3,4,5,6,7 and 8 respectively, [10**(-15)m**(1/3)]. (eng. param.) 10**(-15)m**(1/3) float cnsqs8 Cn2 profile in each layer: Turbulence profile Cn2 in layer 1,2,3,4,5,6,7 and 8 respectively, [10**(-15)m**(1/3)]. (eng. param.) 10**(-15)m**(1/3) float flux1 Flux for star 1 [ADU]. (eng. param.) adu double flux1_var Flux variance for star 1 [ADU**2]. (eng. param.) adu**2 double flux2 Flux for star 2 [ADU]. (eng. param.) adu double flux2_var Flux variance for star 2 [ADU**2]. (eng. param.) adu**2 double fracgl300 Cn2 fraction below 300m. Ratio of the Cn2 integrated from the UT height up to 300m and the cnsqs_uts (Cn2 above UT) value. (sci. param.): float principal fracgl500 Cn2 fraction below 500m. Ratio of the Cn2 integrated from the UT height up to 500m and the cnsqs_uts (Cn2 above UT) value. (sci. param.): float principal fwhm Seeing: SLODAR Seeing at zenith [arcsec]. (eng. param.) arcsec instr.obsty.seeing float hrsfit Surface layer profile: High resolution surface layer fit strength [10**(-15)m**(1/3)]. </p> <p><i>The result of an exponential model fit with 5m scale height and scaled in strength according to the value of the first SLODAR bin. The integration range is from the SLODAR aperture (2m above ground) up to infinity - in practice the exponential model drops to zero after a few tens of metres. (sci. param.) 10**(-15)m**(1/3) float principal maxheight Cn2 Max Height: Maximum height profiled by this measurement [m]. (eng. param.) m float midpoint_date Midpoint (time) of the measurement. time char noise1 Centroid noise fraction for star 1 [pixel**2]. (eng. param.) pixel**2 float noise2 Centroid noise fraction for star 2 [pixel**2]. (eng. param.) pixel**2 float start_date The start time of the measurement. time.start char principal step Cn2 layer thickness: Vertical distance between layers [m]. (eng. param.) m float targ_name SLODAR target name. (eng. param.) char valid 1 if a valid measurement, 0 otherwise. meta.code.qual short principal

dbo dbo.rawTable describing the ESO raw data observed from the various instruments of the La Silla Paranal Observatory, including APEX. For detailed configuration parameters of such observations, please refer to the instrument specific tables (schema_name='ist'). access_estsize Estimated size of the downloaded file in KBytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time.) kbyte phys.size;meta.file obscore:Access.size long principal access_url A URL that can be used to download the raw file; if the file is under proprietary period, only authenticated users with the necessary access rights will be given access to it. meta.ref.url eso:Access.direct char principal datalink_url A URL that can be used to find the access points of the raw file itself, and of all its related files. Related files are: the calibration files necessary to reduce a science raw frame (see calSelector entries), and, if available, a (list of) calibrated product(s) generated out of it.) meta.ref.url obscore:Access.reference char principal date_obs The content of the DATE_OBS keyword exposed as a string and not a datetime field (ESO_DATEADD_SEC does not work on this column, use exp_start instead). time.start;obs.exposure char indexed principal dec Declination FK5 J2000 deg pos.eq.dec;meta.main double indexed principal dec_pnt Pointing Declination FK5 J2000 of the telescope deg pos.eq.dec;instr.tel double principal det_chip1id Detector chip identification. Read from keyword DET CHIP1 ID (alias DET CHIP ID). Example: HASCI03 char principal det_chop_ncycles Number of cycles for chopping. Read from keyword DET CHOP NCYCLES. Example: 1 short principal det_dit Detector Integration Time (Infrared instruments). s float principal det_expid Unique exposure ID number. Read from keyword DET EXP ID (aliases DET EXPO NO, DET EXP NO). short principal det_ndit Number of exposures, each with det_dit integration time (Infrared instruments). short principal dp_cat Observation category: SCIENCE,CALIB,ACQUISITION,TECHNICAL,TEST,SIMULATION,OTHER meta.code.class;obs char principal dp_id The main unique ESO archive file identifier meta.id;meta.dataset char indexed principal dp_tech Mode/technique used for the observation meta.code.class;instr.setup char principal dp_type Type of observation/exposure meta.code.class;obs char principal ecl_lat Ecliptic latitude of the observation. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start The start time of the observation (format: ISO-8601). time.start;obs.exposure char indexed principal exposure Total exposure time on target. s time.duration;obs.exposure float indexed principal filter_path All filters. The string is in the format <value>,<value>,... where <value> is the value of one of the keywords INS.FILT*.NAME instr.setup;instr.filter char indexed principal gal_lat Galactic latitude of the observation. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the observation. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed grat_path All gratings. The string is in the format <value>, <value>,... where <value> is the value of one of the keywords INS.GRAT*.NAME. instr.setup char indexed principal gris_path All grisms. The string is in the format <value>, <value>,... where <value> is the value of one of the keywords INS.GRIS*.NAME. Example: GRIS_600B instr.setup char indexed principal ins_mode Instrument mode instr.setup char indexed principal instrument Instrument name meta.id;instr char indexed principal lambda_max [nm] Maximum wavelength of the overall transmission curve (filter + detector + optics); currently available only for images. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min [nm] Minimum wavelength of the overall transmission curve (filter + detector + optics); currently available only for images. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date The last modification date of this record (format: ISO-8601). time ssa:Curation.Date char indexed principal mjd_obs Modified Julian Date (JD - 2400000.5) of the start of the observation. d time.start;obs double indexed principal ob_id The identifier of the ESO Observation Block, a unique numeric ID assigned by the Observation Handling System meta.id;obs;meta.main int indexed principal ob_name The name of the ESO Observation Block meta.id;obs char indexed principal object Target designation as given by the astronomer, though at times overwritten by the obeservatory, especially for CALIB observations. Compare with the similar field called "target".) meta.id;src char indexed principal obs_mode Service or Visitor mode obs.param char principal origfile The original file name as used on the instrument workstation at the telescope. Read from keyword ORIGFILE. Example: HD75289_0012.fits meta.id;meta.file char indexed principal period ESO proposal cycle obs.proposal.cycle short principal pi_coi Names of the Principal and Co-Investigators meta.curation;obs.observer char indexed principal prog_id ESO program run identification code meta.code;obs char indexed principal prog_title Title of the observing programme meta.title;obs.proposal char principal prog_type Program type: 0=Normal, 1=GTO, 2=DDT, 3=ToO, 4=Large, 5=Short, 6=Calibration, 7=Monitoring MAPPING meta.code.class;obs.proposal int principal ra Right Ascension FK5 J2000 deg pos.eq.ra;meta.main double indexed principal ra_pnt Pointing Right Ascension FK5 J2000 of the telescope deg pos.eq.ra;instr.tel double principal release_date The date at which the data become publicly available at the end of the proprietary period time.release;obs char indexed principal s_region This is the field to be used for spatial queries. Example: select * from dbo.raw where contains( s_region, circle('', 56.3, 20, 1)=1 to search in a cone of 1 deg radius around ra=56.3 dec=20. In output it provides the spatial coordinates of the raw data set expressed as POSITION ra dec, as, for raw data, the footprints of the observations are currently not available. pos.outline;obs.field obscore:Char.SpatialAxis.Coverage.Support.Area char indexed principal slit_path All slits. The string is in the format <value>, <value>,... where <value> is the value of one of the keywords INS.SLIT*.NAME. instr.setup char indexed principal target Target designation (as given by the astronomer) meta.id;src char indexed principal tel_airm_end The airmass at the end of the observation. obs.airMass;time.end float indexed principal tel_airm_start The airmass at the start of the observation. obs.airMass;time.start float indexed principal tel_alt The Altitude angle (deg) at the start of the observation. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_az The Azimuth angle (deg) S=0,W=90 at the start of the observation. deg pos.az.azi;time.start float indexed principal telescope The name of the telescope. meta.id;instr.tel char principal tpl_expno The exposure number within its template execution. meta.number;obs int principal tpl_id The observing template identifier, a unique ID assigned to a template, that is, to a pre-defined sequence of operations involving any combination of telescope, instrument and detector actions meta.id;obs char indexed principal tpl_name The name of the observing template. meta.title;obs char indexed principal tpl_nexp The total number of exposures for the given template. meta.number;obs;stat.max int principal tpl_seqno The template sequence number within the Observing Block meta.code.member;obs.sequence int principal tpl_start The start time of the execution of the observing template, exposed as a string and not as a datetime field as this is used as an identifier (ESO_DATEADD_SEC does not work on this column). meta.id;obs;time.start char indexed principal

dbo.ssaTable of ESO 1D reduced spectra either generated by ESO observers or by a (unattended) processing pipeline using certified master calibrations. The table is actually used by the ESO Simple Spectral Access (ivo://eso.org/ssap) service.ssa: access_estsize The size in kilobytes of the downloaded file. kbyte phys.size;meta.file ssa:Access.Size long indexed principal access_url The URL that can be used to download the data set. meta.ref.url ssa:Access.Reference char principal APERTURE Aperture angular size, in degrees. Set to the width of the slit or the diameter of the fiber. Ref. the APERTURE keyword in the ESO SDP standard. arcsec phys.angSize;instr.fov ssa:Char.SpatialAxis.Coverage.Bounds.Extent double indexed principal COLLECTION The name of the data collection the data set belongs to. meta.id ssa:DataID.Collection char indexed principal creation_type The creation type describes the process used to produce the dataset as returned by the service, from the data source. At the moment no cutout is provided, and the entire archival or project dataset is returned. Transformations such as metadata or data model mediation or format conversions may take place, but the content of the dataset is not substantially modified (e.g., all the data is returned and the sample values are not modified). ssa:DataID.CreationType char principal CREATORDID The original file name as assigned by the data producer, in form of a IVOA identifier. meta.id ssa:DataID.CreatorDID char indexed curation_reference Link to the release notes pertaining to the dataset, describing the calibration process, and other data qualities, written by the data provider. meta.bib.bibcode ssa:Curation.Reference char indexed principal datalink_url The URL that can be used to download the spectrum, and its associated files (if any). meta.ref.url eso:Access.Datalink char principal DATAMODEL Data model used, compliant with the IVOA SpectrumDM recommendation. meta.id ssa:Dataset.DataModel char dataset_length Number of pixels in the spectrum. meta.number ssa:Dataset.Length long principal dataset_title A short, human-readable description of a dataset, and should be less than one line of text. The exact contents of Dataset.Title are up to the data provider. meta.title;meta.dataset ssa:DataID.Title char principal dp_id ESO dataset identifier for the published data set. It is unique within the namespace controlled by the publisher. meta.ref.uri eso:Curation.PublisherDID char indexed principal em_bw Length in meters of the spectrum. Ref. SPEC_BW keyword in ESO SDP standard. m em.wl;instr.bandwidth ssa:Char.SpectralAxis.Coverage.Bounds.Extent double principal em_max Maximum spectral value observed, expressed in vacuum wavelength in meters; ref. WAVELMAX keyword in ESO SDP standard. m em.wl;stat.max ssa:Char.SpectralAxis.Coverage.Bounds.Stop double indexed principal em_min Minimum specrtal value observed, expressed in vacuum wavelength in meters; ref. WAVELMIN keyword in ESO SDP standard. m em.wl;stat.min ssa:Char.SpectralAxis.Coverage.Bounds.Start double indexed principal em_val The central wavelength of the spectrum, expressed in meters m em.wl;instr.bandpass ssa:Char.SpectralAxis.Coverage.Location.Value double indexed principal equinox ESO coordinates are in FK5, equinox 2000, epoch 2000. time.equinox;pos.frame ssa:CoordSys.SpaceFrame.Equinox double principal flux_ucd The Unified Content Descriptor of the observed flux: typically phot.flux.density;em.wl: a flux density sampled in wavelength (as opposed to frequency: em.freq), or phot.flux.density;em.wl;stat.uncalib if uncalibrated in flux. meta.ucd ssa:Char.FluxAxis.Ucd char principal FLUXCALIB Level of the calibration of the observable (typically flux); one of: UNCALIBRATED, ABSOLUTE, NORMALIZED. Ref. FLUXCAL in ESO SDP standard. meta.code.qual ssa:Char.FluxAxis.Calibration char principal FORMAT The format of the downloaded file. meta.code.mime ssa:Access.Format char principal gal_lat Galactic coordinate: latitude of the spectroscopic target. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic coordinate: longitude of the spectroscopic target. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed instrument_name Instrument name meta.id;instr ssa:DataID.Instrument char indexed principal MTIME ISO 8601 of the last modification date of the dataset: deleted datasets are currently not exposed via this interface. time ssa:Curation.Date char indexed principal obs_creator_name The Principal Investigator either of the team that provided the data set to ESO through the Phase 3 process, or of the observing team in case the data have been certified by ESO. meta.id.PI ssa:DataID.Creator char indexed principal positionJ2000 Equatorial coordinates (FK5/J2000); spectroscopic target position. Ref. RA and DEC keyword in ESO SDP standard. Identical information is also provided both: in individual s_ra and s_dec columns, and in the s_region column (useful for spatial queries using intersects or contains deg pos.eq ssa:Char.SpatialAxis.Coverage.Location.Value double principal PUBDID IVOA dataset identifier for the published data set. It is unique within the namespace controlled by the publisher. meta.ref.ivoid ssa:Curation.PublisherDID char indexed principal publication_date Date when the dataset was published at ESO. time;meta.dataset ssa:DataID.Date char indexed principal publisher A short string identifying the publisher of the data. meta.curation ssa:Curation.Publisher char principal rights Either public or proprietary ssa:Curation.Rights char principal s_dec Equatorial coordinate: Declination (FK5/J2000); spectroscopic target position. Ref. DEC keyword in ESO SDP standard. deg pos.eq.dec obscore:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed principal s_ra Equatorial coordinate: Right Ascension (FK5/J2000); spectroscopic target position. Ref. RA keyword in ESO SDP standard. deg pos.eq.ra obscore:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed principal s_region The spatial footprint of the data set. For an ESO spectrum, the returned footprint is the position (s_ra,s_dec). pos.outline;instr.fov ssa:Char.SpatialAxis.Coverage.Support.Area char indexed principal SNR Signal to noise ratio (average) stat.snr ssa:Derived.SNR double indexed principal space_frame ESO coordinates are in FK5, equinox 2000, epoch 2000. pos.frame ssa:CoordSys.SpaceFrame.Name char principal spatial_resolution The spatial resolution in degrees. deg pos.angResolution ssa:Char.SpatialAxis.Resolution double indexed principal SPECRP The characteristic spectral resolving power (lambda/delta(lambda)) of the data set. Ref. SPECRES keyword in ESO SDP standard. spect.resolution ssa:Char.SpectralAxis.ResPower double indexed principal t_elapsed The elapsed time, in seconds, between the beginning of the (first) observation and the end of the (last) observation. s time.interval ssa:Char.TimeAxis.Coverage.Bounds.Extent double principal t_exptime Total integration time per pixel (in seconds); ref. EXPTIME keyword in ESO SDP standard. s time.duration;obs.exposure ssa:Char.TimeAxis.Coverage.Support.Extent double indexed principal t_max Stop time in MJD; ref. MJD-END keyword in ESO SDP standard. d time.end;obs.exposure ssa:Char.TimeAxis.Coverage.Bounds.Stop double indexed principal t_mid Midpoint of the observation. d time.epoch ssa:Char.TimeAxis.Coverage.Location.Value double principal t_min Start time in MJD; ref MJD-OBS keyword in ESO SDP standard. d time.start;obs.exposure ssa:Char.TimeAxis.Coverage.Bounds.Start double indexed principal TARGETNAME The target name as assigned by the Principal Investigator; ref. Ref. OBJECT keyword in ESO SDP standard. For spectroscopic public surveys, the value shall be set to the survey source identifier, which shall be unique within the survey meta.id;src ssa:Target.Name char indexed principal WAVECALIB The calibration status of the spectral axis (default: absolute). meta.code.qual ssa:Char.SpectralAxis.Calibration char principal

ist Schema containing the Instrument Specific Tables, each describing the specific instrument and telescope configurations of the La Silla Paranal Chanjantor observed raw files, along with information on the observing programme, ambient conditions, etc. This information complement, and at times repeat, the one available in the 'dbo.raw' table, which summarises all raw observations from all instruments. Old instruments (e.g EMMI) do not have a corresponding IST table; for those please use the 'dbo.raw' table. ist.alpacaTable of the ALPACA raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. ALPACA information pages are available at: https://archive.eso.org/docurl?ALPACA All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal ccd_temp CCD temperature at start of exposure in Celsius. Originating from FITS keyword: CCD-TEMP. Celsius phys.temperature;instr.det float indexed principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal datamax Originating from FITS keyword: DATAMAX. float indexed principal datamin Originating from FITS keyword: DATAMIN. float indexed principal date_end UTC date at the end of the exposure. Originating from FITS keyword: DATE-END. time.end;obs.exposure char indexed principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_chip1_id Detector chip identification. Originating from FITS keyword: HIERARCH ESO DET CHIP1 ID. meta.id;instr.det char indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal egain Electronic gain in e-/ADU. Originating from FITS keyword: EGAIN. float indexed principal exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. time.start;obs.exposure char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal jd Julian Date at time of exposure. Originating from FITS keyword: JD. d time.start;obs double indexed principal jd_helio Heliocentric Julian Date at time of exposure. Originating from FITS keyword: JD-HELIO. d time.start;obs double indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. s time.interval float indexed principal mjd_end Modified Julian Date (MJD) of the end of the exposure (UTC). Originating from FITS keyword: MJD-END. d time.end;obs.exposure double indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal naxis1 fastest changing axis. Originating from FITS keyword: NAXIS1. pixel meta.number;instr.pixel;obs.field int indexed principal naxis2 next to fastest changing axis. Originating from FITS keyword: NAXIS2. pixel meta.number;instr.pixel;obs.field int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal posinseq Pos. within sequence: either A or B. Originating from FITS keyword: POSINSEQ. meta.id char indexed principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date Public release date of the data after the proprietary period. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal sqm_zen Night Sky Brightness in mag/arcsec^2 at zenith. Originating from FITS keyword: SQM_ZEN. mag.arcsec**(-2) phot.mag float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal xpixsz Pixel Width in microns (after binning). Originating from FITS keyword: XPIXSZ. um float indexed principal ypixsz Pixel Height in microns (after binning). Originating from FITS keyword: YPIXSZ. um float indexed principal

ist.amberTable of the AMBER raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. AMBER information pages are available at: https://archive.eso.org/docurl?AMBER All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal del_ft_sensor Fringe Tracker Sensor Name. Originating from FITS keyword: HIERARCH ESO DEL FT SENSOR. meta.id char indexed principal del_ft_status Fringe Tracker Status. Originating from FITS keyword: HIERARCH ESO DEL FT STATUS. meta.code.status char indexed principal det_dit Integration time for a single detector readout. For some instruments, this represents the exposure time of a single frame, while for others, it corresponds to an integration step within a multi-readout exposure sequence. The total integration time for an observation may be derived by multiplying det_dit by det_ndit (if applicable). Expressed in seconds. Originating from FITS keyword: HIERARCH ESO DET DIT. s time.duration;instr.det float indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal det_ntel Number of telescopes. Originating from FITS keyword: HIERARCH ESO DET NTEL. meta.number;instr.tel short indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_grat1_wlen Grating central wavelength [nm]. Originating from FITS keyword: HIERARCH ESO INS GRAT1 WLEN. nm em.wl.central;instr.dispersion float indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal iss_conf_station1 Station name of telescope in VLTI arm 1. Originating from FITS keyword: HIERARCH ESO ISS CONF STATION1. meta.id;instr.tel char indexed principal iss_conf_station2 Station name of telescope in VLTI arm 2. Originating from FITS keyword: HIERARCH ESO ISS CONF STATION2. meta.id;instr.tel char indexed principal iss_conf_station3 Station name of telescope in VLTI arm 3. Originating from FITS keyword: HIERARCH ESO ISS CONF STATION3. meta.id;instr.tel char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal ob_tplno Template number within the observation block, indicating the sequence order of exposures. Originating from FITS keyword: HIERARCH ESO OBS TPLNO. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal ocs_obs_mode The possibe values for observation mode are : - 2T for 2 telescopes mode, - 3T for 3 telescopes mode. Originating from FITS keyword: HIERARCH ESO OCS OBS MODE. instr.setup;instr.tel;stat.value char indexed principal ocs_obs_specconf Spectral configuration : predefined spectral configurations, used for standard setup. It combines a grating resolution (Low, Medium or High), a spectral band (JHK, JH, HK, KH, J, H, K) +/- a grating order and a wavelength. Originating from FITS keyword: HIERARCH ESO OCS OBS SPECCONF. instr.order;spect.resolution;phys.current char indexed principal ocs_obs_type Observation type : std for sandard (non differential mode), spa for spatial differential mode. Originating from FITS keyword: HIERARCH ESO OCS OBS TYPE. instr.setup;obs char indexed principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date Public release date of the data after the proprietary period. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.apexTable of the APEX raw data. Note that the APEX raw data table repeats the same identifier (dp_id) for each of the different receivers used (up to 8); the corresponding records show different rstfrq, skyfrq, and febe values. The APEX information pages are available at: https://archive.eso.org/docurl?APEX All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal bwid Bandwidth [GHz]. Originating from FITS keyword: BWID. GHz instr.bandwidth;em.freq float indexed principal channels Number of spec channels for this BASEBAND. Originating from FITS keyword: CHANNELS. meta.id;em.bin int indexed principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the date and time of exposure start (International Atomic Time - TAI). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss..)', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column, for that use exp_start instead. Originating from FITS keyword: DATE-OBS. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (International Atomic Time - TAI). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal febe Frontend-backend detector combination. Originating from FITS keyword: FEBE. meta.id;instr.det char indexed principal freq Frequency [GHz]. Originating from FITS keyword: FREQ. GHz instr.bandwidth;em.freq float indexed principal freqres Frequency resolution. Originating from FITS keyword: FREQRES. pos.resolution;em.freq float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed instrument Type of the instrument (APEXHET = heterodynes, APEXBOL = bolometers). Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal line Line name. Originating from FITS keyword: LINE. meta.id;em.line char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the observations (in International Atomic Time - TAI). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal npols Number of polarisations. Originating from FITS keyword: NPOLS. meta.id int indexed principal nsubs Number of subscans in this scan. Originating from FITS keyword: NSUBS. meta.number short indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observer_initials Observer and operator initials. Originating from FITS keyword: OBSID. meta.id;obs.observer char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the original file. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal project_id Identifier for the APEX project ID of the form: I-T[P]PP.C-NNNNR-YYYY where I: a letter for the APEX partner institute (M, E, O, or C), T: the proposal type,[P]PP: 3 digits (from period 100 on) or 2 digits (until period 99) indicating the observing period, C: science category (for ESO), or simply 'F' (for the other APEX partners), NNNN: the 4-digit project number, R: the run letter (which is used by ESO, Sweden, and Chile. For MPI it is usually 'A'), YYYY: the year. Originating from FITS keyword: PROJID meta.id;obs.proposal char indexed principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date Public release date of the data after the proprietary period. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal restfreq [Hz] Rest frequency of line. Originating from FITS keyword: RESTFREQ. Hz em.freq;em.line float indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal scangeom Scan geometry. Originating from FITS keyword: SCANGEOM. instr.setup;obs char indexed principal scanmode Mapping mode. Originating from FITS keyword: SCANMODE. instr.setup;obs char indexed principal scannum Scan number. Originating from FITS keyword: SCANNUM. meta.id;obs int indexed principal scantype Scan astronomical type. Originating from FITS keyword: SCANTYPE. instr.setup;obs char indexed principal skyfreq [Hz] Sky frequency at the center of the baseband. Originating from FITS keyword: SKYFREQ. Hz em.freq;instr.skyLevel float indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal wobcycle [s] Wobbler period. Originating from FITS keyword: WOBCYCLE. s instr.setup;instr;time.period float indexed principal wobthrow [deg] Wobbler throw. Originating from FITS keyword: WOBTHROW. deg instr.setup float indexed principal wobused Wobbler used?. Originating from FITS keyword: WOBUSED. meta.code.status char indexed principal

ist.apex_quicklooksTable of the APEX quick look data products. Each TAR file contains observing logs and (in most cases) quick reductions of the data, including the scripts used to produce them. APEX information pages are available at: https://archive.eso.org/docurl?APEX All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the APEX quick look TAR file in kilo bytes. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the quicklook product. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal instrument Type of the instrument (APEXHET = heterodynes, APEXBOL = bolometers). Originating from FITS keyword: INSTRUME. meta.id;instr char indexed principal instrument_type Type of the instrument used: Heterodyne or Bolometer. meta.code.class;instr char indexed principal partner This field indicates which partner institute an APEX project belongs to, it can be: ESO, Max-Planck, Onsala, Chilean or Technical project. meta.id char indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal project_id Identifier for the APEX project ID of the form: I-T[P]PP.C-NNNNR-YYYY where I: a letter for the APEX partner institute (M, E, O, or C), T: the proposal type,[P]PP: 3 digits (from period 100 on) or 2 digits (until period 99) indicating the observing period, C: science category (for ESO), or simply 'F' (for the other APEX partners), NNNN: the 4-digit project number, R: the run letter (which is used by ESO, Sweden, and Chile. For MPI it is usually 'A'), YYYY: the year. Originating from FITS keyword: PROJID meta.id;obs.proposal char indexed principal quicklook_id Name of APEX quick look product TAR file. meta.id;meta.file;meta.main char indexed principal release_date Public release date of the data after the proprietary period. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal

ist.criresTable of the CRIRES raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. CRIRES information pages are available at: https://archive.eso.org/docurl?CRIRES All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal aos_rtc_loop_state AO loop state: open or closed. Originating from FITS keyword: HIERARCH ESO AOS RTC LOOP STATE. meta.code.status char indexed principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_dit Integration time for a single detector readout. For some instruments, this represents the exposure time of a single frame, while for others, it corresponds to an integration step within a multi-readout exposure sequence. The total integration time for an observation may be derived by multiplying det_dit by det_ndit (if applicable). Expressed in seconds. Originating from FITS keyword: HIERARCH ESO DET DIT (for original CRIRES (2007-2014)) and HIERARCH ESO DET SEQ1 DIT (for the upgraded CRIRES (2021 onward)). s time.duration;instr.det float indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal det_seq1_dit Integration time for a single detector readout. For some instruments, this represents the exposure time of a single frame, while for others, it corresponds to an integration step within a multi-readout exposure sequence. The total integration time for an observation may be derived by multiplying det_dit by det_ndit (if applicable). Expressed in seconds. Originating from FITS keyword: HIERARCH ESO DET SEQ1 DIT. s time.duration;instr.det float indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_grat_order Grating order number. Originating from FITS keyword: HIERARCH ESO INS GRAT1 ORDER. instr.order int indexed principal ins_grat2_id Grating unique ID. Originating from FITS keyword: HIERARCH ESO INS GRAT2 ID. instr.setup char indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal ins_pol_type Polarization Stokes parameter. Originating from FITS keyword: HIERARCH ESO INS POL TYPE. phys.polarization.stokes char indexed principal ins_slit1_id Slit Identification. Originating from FITS keyword: HIERARCH ESO INS SLIT1 ID. instr.setup char indexed principal ins_slit1_wid Slit width [arcsec]. Originating from FITS keyword: HIERARCH ESO INS SLIT1 WID. arcsec instr.setup;stat.value float indexed principal ins_wlen_cwlen [nm] Reference wavelength that uniquely identifies the wavelength settings (cross disperser + order sorting filters + echelle grating). Pertaining to CRIRES+, before 2014 also used but with different meaning (see ins_wlen_ref instead). Originating from FITS keyword: HIERARCH ESO INS WLEN CWLEN. nm em.wl.central;instr.setup double indexed principal ins_wlen_id Name of wavelength settings based on reference wavelength. Pertaining to upgraded CRIRES+, not used before 2021. Originating from FITS keyword: HIERARCH ESO INS WLEN ID. meta.id;em.wl;instr.setup char indexed principal ins_wlen_ref [nm] reference wavelength for the standard settings, defined as the wavelength at pixel 512 of detector 3. Pertaining to original CRIRES before upgrade, used up to 2014. Originating from FITS keyword: HIERARCH ESO INS WLEN REF. nm em.wl;instr.setup double indexed principal ins1_mirr1_id Mirror unique ID. Originating from FITS keyword: HIERARCH ESO INS1 MIRR1 ID. meta.id;instr.setup char indexed principal ins1_opti1_name Element name. Originating from FITS keyword: HIERARCH ESO INS1 OPTI1 NAME. instr.setup char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal lamp_name Name of the lamp used. meta.id char indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_parent_id Scheduling parent container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT ID. meta.id.parent;obs.sequence;obs int indexed principal ob_container_parent_type Scheduling parent container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT TYPE. meta.code.class;obs.sequence char indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal ob_tplno Template number within the observation block, indicating the sequence order of exposures. Originating from FITS keyword: HIERARCH ESO OBS TPLNO. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal ocs_mtrlgy_st Success or failure of metrology. Originating from FITS keyword: HIERARCH ESO OCS MTRLGY ST. meta.code.status char indexed principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date Public release date of the data after the proprietary period. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_iwv_start Average of the Integrated Water Vapor measurements towards zenith over the previous 2min at start of exposure. Originating from FITS keyword: HIERARCH ESO TEL AMBI IWV START. mm float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_ambi_tau0 Average coherence time as queried periodically from the ASM. Originating from FITS keyword: HIERARCH ESO TEL AMBI TAU0. s float indexed principal tel_ambi_temp Average ambient temperature at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees Celsius. Originating from FITS keyword: HIERARCH ESO TEL AMBI TEMP. Celsius phys.temperature;obs.atmos;stat.mean float indexed principal tel_ambi_winddir Average wind direction at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDDIR. deg float indexed principal tel_ambi_windsp Average wind speed at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in meters per second. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDSP. m.s**(-1) phys.veloc;obs.atmos;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.efoscTable of the EFOSC raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. EFOSC information pages are available at: https://archive.eso.org/docurl?EFOSC All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_filt1_id Unique identifier for the first filter. Originating from FITS keyword: HIERARCH ESO INS FILT1 ID. meta.id;instr.filter char indexed principal ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal ob_tplno Template number within the observation block, indicating the sequence order of exposures. Originating from FITS keyword: HIERARCH ESO OBS TPLNO. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date Public release date of the data after the proprietary period. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_ambi_temp Average ambient temperature at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees Celsius. Originating from FITS keyword: HIERARCH ESO TEL AMBI TEMP. Celsius phys.temperature;obs.atmos;stat.mean float indexed principal tel_ambi_winddir Average wind direction at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDDIR. deg float indexed principal tel_ambi_windsp Average wind speed at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in meters per second. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDSP. m.s**(-1) phys.veloc;obs.atmos;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.erisTable of the ERIS raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. ERIS information pages are available at: https://archive.eso.org/docurl?ERIS All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal ada_posang Position angle of the adapter on the sky at exposure start. This angle, often called adapter offset, is measured counter clockwise (N=0, E=90). Originating from FITS keyword: HIERARCH ESO ADA POSANG. deg pos.posAng;time.start float indexed principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_fram_format Detector frame format. Valid formats are single, cube, extension, single-ext and cube-ext. Originating from FITS keyword: HIERARCH ESO DET FRAM FORMAT. meta.id;obs.exposure char indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal det_read_curname Used readout mode name. Originating from FITS keyword: HIERARCH ESO DET READ CURNAME. meta.id;instr.det;instr.setup char indexed principal det_seq1_dit Integration time. Originating from FITS keyword: HIERARCH ESO DET SEQ1 DIT. s time.duration;instr.det float indexed principal det_seq1_win_name NIX DET window (1/2/3/4/5/F). Originating from FITS keyword: HIERARCH ESO DET SEQ1 WIN NAME. meta.id;instr.det char indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins2_nxaw_name NIX aperture wheel. Originating from FITS keyword: HIERARCH ESO INS2 NXAW NAME. instr.setup;instr char indexed principal ins2_nxcw_name NIX camera wheel. Originating from FITS keyword: HIERARCH ESO INS2 NXCW NAME. instr.setup;instr char indexed principal ins2_nxfw_name NIX filter wheel. Originating from FITS keyword: HIERARCH ESO INS2 NXFW NAME. instr.setup;instr char indexed principal ins2_nxis_name NIX image selector. Originating from FITS keyword: HIERARCH ESO INS2 NXIS NAME. instr.setup;instr char indexed principal ins2_nxpw_name NIX pupil wheel. Originating from FITS keyword: HIERARCH ESO INS2 NXPW NAME. instr.setup;instr char indexed principal ins3_spgw_name SPIFFIER grating. Originating from FITS keyword: HIERARCH ESO INS3 SPGW NAME. instr.setup char indexed principal ins3_spxw_name SPIFFIER spatial scale. Originating from FITS keyword: HIERARCH ESO INS3 SPXW NAME. instr.setup;instr char indexed principal instrument Name of the instrument. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_parent_id Scheduling parent container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT ID. meta.id.parent;obs.sequence;obs int indexed principal ob_container_parent_type Scheduling parent container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT TYPE. meta.code.class;obs.sequence char indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal ocs_aomode AO mode used. Originating from FITS keyword: HIERARCH ESO OCS AOMODE. instr.setup char indexed principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date Public release date of the data after the proprietary period. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal seq_arm Name of the sub-system. Originating from FITS keyword: HIERARCH ESO SEQ ARM. meta.id;instr.det char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal tel_rot_altaztrack Track rotator on alt/az instead of Alpha/Delta (T or F). Originating from FITS keyword: HIERARCH ESO TEL ROT ALTAZTRACK. meta.code.status;pos.az.alt;pos.az.azi char indexed principal telescope Identifier and/or name of the telescope used for the observation. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.espressoTable of the ESPRESSO raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. ESPRESSO information pages are available at: https://archive.eso.org/docurl?ESPRESSO All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_binx Binning factor along X. Originating from FITS keyword: HIERARCH ESO DET BINX. arith.factor;pos.cartesian.x int indexed principal det_biny Binning factor along Y. Originating from FITS keyword: HIERARCH ESO DET BINY. arith.factor;pos.cartesian.y int indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal det_read_curname Used readout mode name. Originating from FITS keyword: HIERARCH ESO DET READ CURNAME. meta.id;instr.det;instr.setup char indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_filt1_id Unique identifier for the first filter - in this case Field Stabilization (FS) filter ID. Originating from FITS keyword: HIERARCH ESO INS FILT1 ID. meta.id;instr.filter char indexed principal ins_filt1_name Name of the first filter, following ESO naming conventions - in this case Field Stabilization (FS) filter name. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal ins5_lsela_name Calibration source for fibre A. Originating from FITS keyword: HIERARCH ESO INS5 LSELA NAME. meta.ref;src.calib;obs.calib char indexed principal ins5_lselb_name Calibration source for fibre B. Originating from FITS keyword: HIERARCH ESO INS5 LSELB NAME. meta.ref;src.calib;obs.calib char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_parent_id Scheduling parent container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT ID. meta.id.parent;obs.sequence;obs int indexed principal ob_container_parent_type Scheduling parent container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT TYPE. meta.code.class;obs.sequence char indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal ocs_enabled_fe Enabled front end IDs. Originating from FITS keyword: HIERARCH ESO OCS ENABLED FE. meta.id;phys.abund.Fe;time.end char indexed principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date Public release date of the data after the proprietary period. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.fiatTable of the FIAT raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. FIAT information pages are available at: https://archive.eso.org/docurl?FIAT All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal chip_name Detector chip name. meta.id;instr.det char indexed principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal det_acq1_proc Process name. Originating from FITS keyword: HIERARCH ESO DET ACQ1 PROC. meta.id char indexed principal det_cldc1_dc1 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC1. V instr.setup;stat.value float indexed principal det_cldc1_dc10 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC10. V instr.setup;stat.value float indexed principal det_cldc1_dc11 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC11. V instr.setup;stat.value float indexed principal det_cldc1_dc12 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC12. V instr.setup;stat.value float indexed principal det_cldc1_dc13 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC13. V instr.setup;stat.value float indexed principal det_cldc1_dc14 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC14. V instr.setup;stat.value float indexed principal det_cldc1_dc15 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC15. V instr.setup;stat.value float indexed principal det_cldc1_dc16 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC16. V instr.setup;stat.value float indexed principal det_cldc1_dc17 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC17. V instr.setup;stat.value float indexed principal det_cldc1_dc18 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC18. V instr.setup;stat.value float indexed principal det_cldc1_dc19 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC19. V instr.setup;stat.value float indexed principal det_cldc1_dc2 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC2. V instr.setup;stat.value float indexed principal det_cldc1_dc20 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC20. V instr.setup;stat.value float indexed principal det_cldc1_dc3 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC3. V instr.setup;stat.value float indexed principal det_cldc1_dc4 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC4. V instr.setup;stat.value float indexed principal det_cldc1_dc5 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC5. V instr.setup;stat.value float indexed principal det_cldc1_dc6 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC6. V instr.setup;stat.value float indexed principal det_cldc1_dc7 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC7. V instr.setup;stat.value float indexed principal det_cldc1_dc8 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC8. V instr.setup;stat.value float indexed principal det_cldc1_dc9 Bias voltage setup value. Originating from FITS keyword: HIERARCH ESO DET CLDC1 DC9. V instr.setup;stat.value float indexed principal det_cldc1_file Voltage configuration file. Originating from FITS keyword: HIERARCH ESO DET CLDC1 FILE. instr.setup;meta.file char indexed principal det_detcfg Detector configuration. Originating from FITS keyword: HIERARCH ESO DET DETCFG. instr.setup;instr.det char indexed principal det_ledexp LED-on time in minpulses. Originating from FITS keyword: HIERARCH ESO DET LEDEXP. time;src.var.pulse int indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal det_read_curname Used readout mode name. Originating from FITS keyword: HIERARCH ESO DET READ CURNAME. meta.id;instr.det;instr.setup char indexed principal det_reset Detector reset mode. Originating from FITS keyword: HIERARCH ESO DET RESET. instr.setup;instr.det int indexed principal det_seq1_dit Integration time. Originating from FITS keyword: HIERARCH ESO DET SEQ1 DIT. s time.duration;instr.det float indexed principal det_syscfg System configuration. Originating from FITS keyword: HIERARCH ESO DET SYSCFG. instr.setup;instr.det char indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Exposure Sequence Time. Expressed in seconds. Originating from FITS keyword: HIERARCH ESO DET SEQ1 EXPTIME. s time.duration;obs.sequence;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal ins_bbdy3_tempset Absolute Set Temperature [degC]. Originating from FITS keyword: HIERARCH ESO INS BBDY3 TEMPSET. Celsius instr.skyTemp;instr.det;phys.temperature float indexed principal ins_filt1_id Unique identifier for the first filter. Originating from FITS keyword: HIERARCH ESO INS FILT1 ID. meta.id;instr.filter char indexed principal ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_filt2_name Name of the second filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT2 NAME. meta.id;instr.filter char indexed principal ins_sens18_val [K] Detector temperature. Originating from FITS keyword: HIERARCH ESO INS SENS18 VAL. K instr.skyTemp;instr.det;phys.temperature float indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_tplno Template number within the observation block, indicating the sequence order of exposures. Originating from FITS keyword: HIERARCH ESO OBS TPLNO. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal release_date Public release date of the data after the proprietary period. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal

ist.fors1Table of the FORS1 raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. FORS1 information pages are available at: https://archive.eso.org/docurl?FORS1 All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_out1_conad [e-/ADU] Conversion from ADU to electrons. Originating from FITS keyword: HIERARCH ESO DET OUT1 CONAD. float indexed principal det_outputs Number of outputs. Originating from FITS keyword: HIERARCH ESO DET OUTPUTS. meta.number;instr.det short indexed principal det_read_clock Readout clock pattern used. Originating from FITS keyword: HIERARCH ESO DET READ CLOCK. meta.id;instr.det char indexed principal det_win1_binx Binning factor along X. Originating from FITS keyword: HIERARCH ESO DET WIN1 BINX. arith.factor;pos.cartesian.x short indexed principal det_win1_biny Binning factor along Y. Originating from FITS keyword: HIERARCH ESO DET WIN1 BINY. arith.factor;pos.cartesian.y short indexed principal det_win1_nx Number of pixels along X. Originating from FITS keyword: HIERARCH ESO DET WIN1 NX. pixel meta.number;pos.cartesian.x;instr.pixel short indexed principal det_win1_ny Number of pixels along Y. Originating from FITS keyword: HIERARCH ESO DET WIN1 NY. pixel meta.number;pos.cartesian.y;instr.pixel short indexed principal det_win1_strx First window pixel in X direction within the detector physical system. Originating from FITS keyword: HIERARCH ESO DET WIN1 STRX. pos.cartesian.x;instr.pixel short indexed principal det_win1_stry First window pixel in Y direction within the detector physical system. Originating from FITS keyword: HIERARCH ESO DET WIN1 STRY. pos.cartesian.y;instr.pixel short indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_coll_id Collimator unique ID. Originating from FITS keyword: HIERARCH ESO INS COLL ID. meta.id;instr.setup char indexed principal ins_coll_name Collimator name. Originating from FITS keyword: HIERARCH ESO INS COLL NAME. meta.id;instr.setup char indexed principal ins_filt1_id Unique identifier for the first filter. Originating from FITS keyword: HIERARCH ESO INS FILT1 ID. meta.id;instr.filter char indexed principal ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_filt2_id ESO identification number for the filter. Originating from FITS keyword: HIERARCH ESO INS FILT2 ID. meta.id;instr.filter char indexed principal ins_filt2_name Name of the second filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT2 NAME. meta.id;instr.filter char indexed principal ins_gris1_id Grism unique ID. Originating from FITS keyword: HIERARCH ESO INS GRIS1 ID. instr.setup char indexed principal ins_gris1_name Grism name. Originating from FITS keyword: HIERARCH ESO INS GRIS1 NAME. instr.setup char indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal ins_mos_checksum Unique representation (apart from swapping slitlets) of MOS slitlet configuration, i.e. slitlet positions and widths in an integer number. Originating from FITS keyword: HIERARCH ESO INS MOS CHECKSUM. meta.id;instr.setup int indexed principal ins_reta2_id ESO identification of lambda/2 plate. Originating from FITS keyword: HIERARCH ESO INS RETA2 ID. meta.id;instr.setup char indexed principal ins_reta2_name ESO name for the lambda/2 plate. Originating from FITS keyword: HIERARCH ESO INS RETA2 NAME. meta.id;instr.setup char indexed principal ins_reta2_posang Position angle of lambda/2 plate (N=0 E=90). Originating from FITS keyword: HIERARCH ESO INS RETA2 POSANG. deg pos.posAng;instr.setup;phys.angSize float indexed principal ins_reta4_id ESO identification of lambda/4 plate. Originating from FITS keyword: HIERARCH ESO INS RETA4 ID. meta.id;instr.setup char indexed principal ins_reta4_name ESO name for the lambda/4 plate. Originating from FITS keyword: HIERARCH ESO INS RETA4 NAME. meta.id;instr.setup char indexed principal ins_reta4_posang Position angle of lambda/4 plate (N=0 E=90). Originating from FITS keyword: HIERARCH ESO INS RETA4 POSANG. deg pos.posAng;instr.setup;phys.angSize float indexed principal ins_slit_name SLIT name. Originating from FITS keyword: HIERARCH ESO INS SLIT NAME. instr.setup char indexed principal ins_slit_wid Slit width [arcsec]. Originating from FITS keyword: HIERARCH ESO INS SLIT WID. arcsec instr.setup;stat.value float indexed principal ins_woll_id ESO identification of Wollaston prism. Originating from FITS keyword: HIERARCH ESO INS WOLL ID. instr.setup char indexed principal ins_woll_name ESO name for the Wollaston prism. Originating from FITS keyword: HIERARCH ESO INS WOLL NAME. instr.setup char indexed principal ins_woll_posang Position angle of Wollaston prism (N=0 E=90). Originating from FITS keyword: HIERARCH ESO INS WOLL POSANG. deg pos.posAng;instr.setup;phys.angSize float indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date Public release date of the data after the proprietary period. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_ambi_temp Average ambient temperature at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees Celsius. Originating from FITS keyword: HIERARCH ESO TEL AMBI TEMP. Celsius phys.temperature;obs.atmos;stat.mean float indexed principal tel_ambi_winddir Average wind direction at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDDIR. deg float indexed principal tel_ambi_windsp Average wind speed at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in meters per second. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDSP. m.s**(-1) phys.veloc;obs.atmos;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.fors2Table of the FORS2 raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. FORS2 information pages are available at: https://archive.eso.org/docurl?FORS2 All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_chip1_id Detector chip identification. Originating from FITS keyword: HIERARCH ESO DET CHIP1 ID. meta.id;instr.det char indexed principal det_chip1_name Detector chip name. Originating from FITS keyword: HIERARCH ESO DET CHIP1 NAME. meta.id;instr.det char indexed principal det_out1_conad [e-/ADU] Conversion from ADU to electrons. Originating from FITS keyword: HIERARCH ESO DET OUT1 CONAD. float indexed principal det_read_clock Readout clock pattern used. Originating from FITS keyword: HIERARCH ESO DET READ CLOCK. meta.id;instr.det char indexed principal det_win1_binx Binning factor along X. Originating from FITS keyword: HIERARCH ESO DET WIN1 BINX. arith.factor;pos.cartesian.x short indexed principal det_win1_biny Binning factor along Y. Originating from FITS keyword: HIERARCH ESO DET WIN1 BINY. arith.factor;pos.cartesian.y short indexed principal det_win1_nx Number of pixels along X. Originating from FITS keyword: HIERARCH ESO DET WIN1 NX. pixel meta.number;pos.cartesian.x;instr.pixel short indexed principal det_win1_ny Number of pixels along Y. Originating from FITS keyword: HIERARCH ESO DET WIN1 NY. pixel meta.number;pos.cartesian.y;instr.pixel short indexed principal det_win1_uit1 User defined integration time for each exposure step. For single step exposures, index 1 only is used (UIT1). Originating from FITS keyword: HIERARCH ESO DET WIN1 UIT1. s time float indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal extname Used to distinguish different extensions of the same type in the FITS file. Originating from FITS keyword: EXTNAME. meta.id;meta.fits char indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_coll_id Collimator unique ID. Originating from FITS keyword: HIERARCH ESO INS COLL ID. meta.id;instr.setup char indexed principal ins_coll_name Collimator name. Originating from FITS keyword: HIERARCH ESO INS COLL NAME. meta.id;instr.setup char indexed principal ins_filt1_id Unique identifier for the first filter. Originating from FITS keyword: HIERARCH ESO INS FILT1 ID. meta.id;instr.filter char indexed principal ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_filt2_name Name of the second filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT2 NAME. meta.id;instr.filter char indexed principal ins_gris1_id Grism unique ID. Originating from FITS keyword: HIERARCH ESO INS GRIS1 ID. instr.setup char indexed principal ins_gris1_name Grism name. Originating from FITS keyword: HIERARCH ESO INS GRIS1 NAME. instr.setup char indexed principal ins_mask_id ESO identification number of the mask. Originating from FITS keyword: HIERARCH ESO INS MASK ID. meta.id;instr.setup char indexed principal ins_mask_name ESO name of the mask. Originating from FITS keyword: HIERARCH ESO INS MASK NAME. meta.id;instr.setup char indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal ins_mos_checksum Unique representation (apart from swapping slitlets) of MOS slitlet configuration, i.e. slitlet positions and widths in an integer number. Originating from FITS keyword: HIERARCH ESO INS MOS CHECKSUM. meta.id;instr.setup int indexed principal ins_reta2_id ESO identification of lambda/2 plate. Originating from FITS keyword: HIERARCH ESO INS RETA2 ID. meta.id;instr.setup char indexed principal ins_reta2_name ESO name for the lambda/2 plate. Originating from FITS keyword: HIERARCH ESO INS RETA2 NAME. meta.id;instr.setup char indexed principal ins_reta2_posang Position angle of lambda/2 plate (N=0 E=90). Originating from FITS keyword: HIERARCH ESO INS RETA2 POSANG. deg pos.posAng;instr.setup;phys.angSize float indexed principal ins_reta4_id ESO identification of lambda/4 plate. Originating from FITS keyword: HIERARCH ESO INS RETA4 ID. meta.id;instr.setup char indexed principal ins_reta4_name ESO name for the lambda/4 plate. Originating from FITS keyword: HIERARCH ESO INS RETA4 NAME. meta.id;instr.setup char indexed principal ins_reta4_posang Position angle of lambda/4 plate (N=0 E=90). Originating from FITS keyword: HIERARCH ESO INS RETA4 POSANG. deg pos.posAng;instr.setup;phys.angSize float indexed principal ins_slit_name SLIT name. Originating from FITS keyword: HIERARCH ESO INS SLIT NAME. instr.setup char indexed principal ins_slit_wid Slit width [arcsec]. Originating from FITS keyword: HIERARCH ESO INS SLIT WID. arcsec instr.setup;stat.value float indexed principal ins_woll_id ESO identification of Wollaston prism. Originating from FITS keyword: HIERARCH ESO INS WOLL ID. instr.setup char indexed principal ins_woll_name ESO name for the Wollaston prism. Originating from FITS keyword: HIERARCH ESO INS WOLL NAME. instr.setup char indexed principal ins_woll_posang Position angle of Wollaston prism (N=0 E=90). Originating from FITS keyword: HIERARCH ESO INS WOLL POSANG. deg pos.posAng;instr.setup;phys.angSize float indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_parent_id Scheduling parent container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT ID. meta.id.parent;obs.sequence;obs int indexed principal ob_container_parent_type Scheduling parent container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT TYPE. meta.code.class;obs.sequence char indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date Public release date of the data after the proprietary period. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal seq_spec_targ MOS Slit Position. Originating from FITS keyword: HIERARCH ESO SEQ SPEC TARG. instr.setup char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_ambi_temp Average ambient temperature at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees Celsius. Originating from FITS keyword: HIERARCH ESO TEL AMBI TEMP. Celsius phys.temperature;obs.atmos;stat.mean float indexed principal tel_ambi_winddir Average wind direction at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDDIR. deg float indexed principal tel_ambi_windsp Average wind speed at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in meters per second. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDSP. m.s**(-1) phys.veloc;obs.atmos;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.giraffeTable of the GIRAFFE raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. GIRAFFE information pages are available at: https://archive.eso.org/docurl?GIRAFFE All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_exp_mode Exposure mode. Originating from FITS keyword: HIERARCH ESO INS EXP MODE. instr.setup;instr;obs.exposure char indexed principal ins_filt_name Filter name. Originating from FITS keyword: HIERARCH ESO INS FILT NAME. meta.id;instr.filter char indexed principal ins_grat_id Grating unique ID. Originating from FITS keyword: HIERARCH ESO INS GRAT ID. instr.setup char indexed principal ins_grat_name Grating common name. Originating from FITS keyword: HIERARCH ESO INS GRAT NAME. instr.setup char indexed principal ins_grat_wlen Grating central wavelength [nm]. Originating from FITS keyword: HIERARCH ESO INS GRAT WLEN. nm em.wl.central;instr.dispersion float indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal ins_slit_name Slit name. Originating from FITS keyword: HIERARCH ESO INS SLIT NAME. instr.setup char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_parent_id Scheduling parent container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT ID. meta.id.parent;obs.sequence;obs int indexed principal ob_container_parent_type Scheduling parent container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT TYPE. meta.code.class;obs.sequence char indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date Public release date of the data after the proprietary period. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.gravityTable of the GRAVITY raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. GRAVITY information pages are available at: https://archive.eso.org/docurl?GRAVITY All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal cou_ao_system AO System name [list_item]. Originating from FITS keyword: HIERARCH ESO COU AO SYSTEM. instr.setup;stat.value char indexed principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det1_ndit Number of subintegrations. Originating from FITS keyword: HIERARCH ESO DET1 NDIT. meta.number;instr.det short indexed principal det1_seq1_dit Integration time. Originating from FITS keyword: HIERARCH ESO DET1 SEQ1 DIT. s time.duration;instr.det float indexed principal det2_ndit Number of subintegrations. Originating from FITS keyword: HIERARCH ESO DET2 NDIT. meta.number;instr.det short indexed principal det2_seq1_dit Integration time. Originating from FITS keyword: HIERARCH ESO DET2 SEQ1 DIT. s time.duration;instr.det float indexed principal det3_seq1_dit Integration time. Originating from FITS keyword: HIERARCH ESO DET3 SEQ1 DIT. s time.duration;instr.det float indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal ft_pola_mode Fringe tracker polarization mode. Originating from FITS keyword: HIERARCH ESO FT POLA MODE. instr.setup;phys.polarization char indexed principal ft_robj_name Fringe tracking object name. Originating from FITS keyword: HIERARCH ESO FT ROBJ NAME. meta.id char indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_det3_gain [e-/ADU] Conversion from ADU to electrons. Originating from FITS keyword: HIERARCH ESO INS DET3 GAIN. float indexed principal ins_fddl_window Movement window for FDDL. Originating from FITS keyword: HIERARCH ESO INS FDDL WINDOW. instr.setup float indexed principal ins_met_mode Mode of the metrology Laser. Originating from FITS keyword: HIERARCH ESO INS MET MODE. instr.setup char indexed principal ins_pola_mode Polarization mode. Originating from FITS keyword: HIERARCH ESO INS POLA MODE. instr.setup;phys.polarization char indexed principal ins_roof_pos Roof mirror position. Originating from FITS keyword: HIERARCH ESO INS ROOF POS. pos;pos.cartesian char indexed principal ins_sobj_name Science object name. Originating from FITS keyword: HIERARCH ESO INS SOBJ NAME. meta.id char indexed principal ins_spec_res Science camera spectral resolution. Originating from FITS keyword: HIERARCH ESO INS SPEC RES. spect.resolution;instr.setup;instr char indexed principal instrument Name of the instrument. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal iss_baseline Interferometric Array. Originating from FITS keyword: HIERARCH ESO ISS BASELINE. instr.baseline;instr.setup char indexed principal iss_conf_station1 Station name of telescope in VLTI arm 1. Originating from FITS keyword: HIERARCH ESO ISS CONF STATION1. meta.id;instr.tel char indexed principal iss_conf_station2 Station name of telescope in VLTI arm 2. Originating from FITS keyword: HIERARCH ESO ISS CONF STATION2. meta.id;instr.tel char indexed principal iss_conf_station3 Station name of telescope in VLTI arm 3. Originating from FITS keyword: HIERARCH ESO ISS CONF STATION3. meta.id;instr.tel char indexed principal iss_conf_station4 Station name of telescope in VLTI arm 4. Originating from FITS keyword: HIERARCH ESO ISS CONF STATION4. meta.id;instr.tel char indexed principal iss_feed_mode VLTI feed mode. Originating from FITS keyword: HIERARCH ESO ISS FEED MODE. meta.id;instr.setup char indexed principal iss_vltitype Type of interferometric observations. Originating from FITS keyword: HIERARCH ESO ISS VLTITYPE. meta.code.class;instr.setup char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_parent_id Scheduling parent container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT ID. meta.id.parent;obs.sequence;obs int indexed principal ob_container_parent_type Scheduling parent container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT TYPE. meta.code.class;obs.sequence char indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal ob_tplno Template number within the observation block, indicating the sequence order of exposures. Originating from FITS keyword: HIERARCH ESO OBS TPLNO. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date Public release date of the data after the proprietary period. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO ISS AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO ISS AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO ISS ALT. deg pos.az.alt;time.start float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO ISS AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.harpsTable of the HARPS raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. HARPS information pages are available at: https://archive.eso.org/docurl?HARPS All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS.sss' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date Public release date of the data after the proprietary period. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.hawkiTable of the HAWKI raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. HAWKI information pages are available at: https://archive.eso.org/docurl?HAWKI All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_dit Integration time for a single detector readout. For some instruments, this represents the exposure time of a single frame, while for others, it corresponds to an integration step within a multi-readout exposure sequence. The total integration time for an observation may be derived by multiplying det_dit by det_ndit (if applicable). Expressed in seconds. Originating from FITS keyword: HIERARCH ESO DET DIT. s time.duration;instr.det float indexed principal det_ncorrs_name Read-Out Mode Name. Originating from FITS keyword: HIERARCH ESO DET NCORRS NAME. meta.id;instr.det;instr.setup char indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_filt2_name Name of the second filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT2 NAME. meta.id;instr.filter char indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_parent_id Scheduling parent container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT ID. meta.id.parent;obs.sequence;obs int indexed principal ob_container_parent_type Scheduling parent container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT TYPE. meta.code.class;obs.sequence char indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal ob_tplno Template number within the observation block, indicating the sequence order of exposures. Originating from FITS keyword: HIERARCH ESO OBS TPLNO. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date Public release date of the data after the proprietary period. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.isaacTable of the ISAAC raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. ISAAC information pages are available at: https://archive.eso.org/docurl?ISAAC All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_dit Integration time for a single detector readout. For some instruments, this represents the exposure time of a single frame, while for others, it corresponds to an integration step within a multi-readout exposure sequence. The total integration time for an observation may be derived by multiplying det_dit by det_ndit (if applicable). Expressed in seconds. Originating from FITS keyword: HIERARCH ESO DET DIT. s time.duration;instr.det float indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal det_win_nx Number of pixels along X. Originating from FITS keyword: HIERARCH ESO DET WIN NX. pixel meta.number;pos.cartesian.x;instr.pixel short indexed principal det_win_ny Number of pixels along Y. Originating from FITS keyword: HIERARCH ESO DET WIN NY. pixel meta.number;pos.cartesian.y;instr.pixel short indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_filt2_name Name of the second filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT2 NAME. meta.id;instr.filter char indexed principal ins_filt3_name ESO name for the filter. Originating from FITS keyword: HIERARCH ESO INS FILT3 NAME. meta.id;instr.filter char indexed principal ins_filt4_name ESO name for the filter. Originating from FITS keyword: HIERARCH ESO INS FILT4 NAME. meta.id;instr.filter char indexed principal ins_grat_name Grating common name. Originating from FITS keyword: HIERARCH ESO INS GRAT NAME. instr.setup char indexed principal ins_grat_order Grating order number. Originating from FITS keyword: HIERARCH ESO INS GRAT ORDER. instr.order short indexed principal ins_grat_wlen Grating central wavelength [nm]. Originating from FITS keyword: HIERARCH ESO INS GRAT WLEN. nm em.wl.central;instr.dispersion float indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal ins_opti1_name OPTIi name. Originating from FITS keyword: HIERARCH ESO INS OPTI1 NAME. instr.setup char indexed principal ins_pixscale Pixel scale [arcsec]. Originating from FITS keyword: HIERARCH ESO INS PIXSCALE. arcsec instr.setup;instr.scale;instr.pixel float indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.kmosTable of the KMOS raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. KMOS information pages are available at: https://archive.eso.org/docurl?KMOS All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal det_seq1_dit Integration time. Originating from FITS keyword: HIERARCH ESO DET SEQ1 DIT. s time.duration;instr.det float indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_filt1_id Unique identifier for the first filter. Originating from FITS keyword: HIERARCH ESO INS FILT1 ID. meta.id;instr.filter char indexed principal ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_filt2_name Name of the second filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT2 NAME. meta.id;instr.filter char indexed principal ins_grat1_name Grating common name. Originating from FITS keyword: HIERARCH ESO INS GRAT1 NAME. instr.setup char indexed principal ins_lamp1_name Name of the lamp. Originating from FITS keyword: HIERARCH ESO INS LAMP1 NAME. meta.id char indexed principal ins_lamp2_name Name of the lamp. Originating from FITS keyword: HIERARCH ESO INS LAMP2 NAME. meta.id char indexed principal ins_lamp3_name Name of the lamp. Originating from FITS keyword: HIERARCH ESO INS LAMP3 NAME. meta.id char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_parent_id Scheduling parent container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT ID. meta.id.parent;obs.sequence;obs int indexed principal ob_container_parent_type Scheduling parent container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT TYPE. meta.code.class;obs.sequence char indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal ob_tplno Template number within the observation block, indicating the sequence order of exposures. Originating from FITS keyword: HIERARCH ESO OBS TPLNO. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_ambi_temp Average ambient temperature at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees Celsius. Originating from FITS keyword: HIERARCH ESO TEL AMBI TEMP. Celsius phys.temperature;obs.atmos;stat.mean float indexed principal tel_ambi_winddir Average wind direction at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDDIR. deg float indexed principal tel_ambi_windsp Average wind speed at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in meters per second. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDSP. m.s**(-1) phys.veloc;obs.atmos;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.matisseTable of the MATISSE raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. MATISSE information pages are available at: https://archive.eso.org/docurl?MATISSE All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal del_ft_sensor Fringe Tracker Sensor Name. Originating from FITS keyword: HIERARCH ESO DEL FT SENSOR. meta.id char indexed principal det_name Name of detector system. Originating from FITS keyword: HIERARCH ESO DET NAME. meta.id;instr.det char indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal det_read_curname Used readout mode name. Originating from FITS keyword: HIERARCH ESO DET READ CURNAME. meta.id;instr.det;instr.setup char indexed principal det_seq1_dit Integration time. Originating from FITS keyword: HIERARCH ESO DET SEQ1 DIT. s time.duration;instr.det float indexed principal det_win_mtrh2 [pix] Height of a sub-window row. Originating from FITS keyword: HIERARCH ESO DET WIN MTRH2. pixel phys.current;instr.det int indexed principal det_win_mtrs2 [pix] Bottom side of a sub-window row. Originating from FITS keyword: HIERARCH ESO DET WIN MTRS2. pixel phys.current;instr.det int indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dispersive_element Dispersive element name (value of ins_dil_name or ins_din_name) depending on the observing mode defined in det_name. meta.id;instr.filter char indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal filter Filter name (value of ins_fil_name or ins_fin_name) depending on the observing mode defined in det_name. meta.id;instr.filter char indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_bcd1_name BCD device name. Originating from FITS keyword: HIERARCH ESO INS BCD1 NAME. instr.setup char indexed principal ins_bcd2_name BCD device name. Originating from FITS keyword: HIERARCH ESO INS BCD2 NAME. instr.setup char indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal iss_baseline Interferometric Array. Originating from FITS keyword: HIERARCH ESO ISS BASELINE. instr.baseline;instr.setup char indexed principal iss_chop_freq Frequency of chopping cycle in Hz. Originating from FITS keyword: HIERARCH ESO ISS CHOP FREQ. Hz instr.tel;em.freq float indexed principal iss_chop_st Chopping status. Originating from FITS keyword: HIERARCH ESO ISS CHOP ST. meta.code.status char indexed principal iss_conf_station1 Station name of telescope in VLTI arm 1. Originating from FITS keyword: HIERARCH ESO ISS CONF STATION1. meta.id;instr.tel char indexed principal iss_conf_station2 Station name of telescope in VLTI arm 2. Originating from FITS keyword: HIERARCH ESO ISS CONF STATION2. meta.id;instr.tel char indexed principal iss_conf_station3 Station name of telescope in VLTI arm 3. Originating from FITS keyword: HIERARCH ESO ISS CONF STATION3. meta.id;instr.tel char indexed principal iss_conf_station4 Station name of telescope in VLTI arm 4. Originating from FITS keyword: HIERARCH ESO ISS CONF STATION4. meta.id;instr.tel char indexed principal iss_vltitype Type of interferometric observations. Originating from FITS keyword: HIERARCH ESO ISS VLTITYPE. meta.code.class;instr.setup char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_parent_id Scheduling parent container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT ID. meta.id.parent;obs.sequence;obs int indexed principal ob_container_parent_type Scheduling parent container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT TYPE. meta.code.class;obs.sequence char indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal ob_tplno Template number within the observation block, indicating the sequence order of exposures. Originating from FITS keyword: HIERARCH ESO OBS TPLNO. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal photometric_slider Photometric slider name (value of ins_pil_name or ins_pin_name) depending on the observing mode defined in det_name. meta.id;instr.filter char indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal polarizer Polarizer name (value of ins_pol_name or ins_pon_name) depending on the observing mode defined in det_name. meta.id;instr.filter char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal spatial_filter Spatial filter name (value of ins_sfl_name or ins_sfn_name) depending on the observing mode defined in det_name. meta.id;instr.filter char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.midiTable of the MIDI raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. MIDI information pages are available at: https://archive.eso.org/docurl?MIDI All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal del_ft_sensor Fringe Tracker Sensor Name. Originating from FITS keyword: HIERARCH ESO DEL FT SENSOR. meta.id char indexed principal del_ft_status Fringe Tracker Status. Originating from FITS keyword: HIERARCH ESO DEL FT STATUS. meta.code.status char indexed principal det_dit Integration time for a single detector readout. For some instruments, this represents the exposure time of a single frame, while for others, it corresponds to an integration step within a multi-readout exposure sequence. The total integration time for an observation may be derived by multiplying det_dit by det_ndit (if applicable). Expressed in seconds. Originating from FITS keyword: HIERARCH ESO DET DIT. s time.duration;instr.det float indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_cam_name Position identification name. Originating from FITS keyword: HIERARCH ESO INS CAM NAME. meta.id;pos;pos.cartesian char indexed principal ins_filt_name ESO name for the filter. Originating from FITS keyword: HIERARCH ESO INS FILT NAME. meta.id;instr.filter char indexed principal ins_gris_name Grism name. Originating from FITS keyword: HIERARCH ESO INS GRIS NAME. instr.setup char indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal ins_opt1_name Position identification name. Originating from FITS keyword: HIERARCH ESO INS OPT1 NAME. instr.setup char indexed principal ins_piez_posnum The number of positions/halts dividing the stroke. Originating from FITS keyword: HIERARCH ESO INS PIEZ POSNUM. meta.number;pos;pos.cartesian int indexed principal ins_shut_name Position identification name. Originating from FITS keyword: HIERARCH ESO INS SHUT NAME. meta.id;pos;pos.cartesian char indexed principal ins_slit_name Position identification name. Originating from FITS keyword: HIERARCH ESO INS SLIT NAME. instr.setup char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal iss_chop_freq Frequency of chopping cycle in Hz. Originating from FITS keyword: HIERARCH ESO ISS CHOP FREQ. Hz instr.tel;em.freq float indexed principal iss_chop_st Chopping status. Originating from FITS keyword: HIERARCH ESO ISS CHOP ST. meta.code.status char indexed principal iss_chop_throw Amplitude of chopping [arcsec]. Originating from FITS keyword: HIERARCH ESO ISS CHOP THROW. arcsec src.var.amplitude;stat.value float indexed principal iss_conf_ntel Number of telescopes used by VLTI. Originating from FITS keyword: HIERARCH ESO ISS CONF NTEL. meta.number;instr.tel int indexed principal iss_conf_station1 Station name of telescope in VLTI arm 1. Originating from FITS keyword: HIERARCH ESO ISS CONF STATION1. meta.id;instr.tel char indexed principal iss_conf_station2 Station name of telescope in VLTI arm 2. Originating from FITS keyword: HIERARCH ESO ISS CONF STATION2. meta.id;instr.tel char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal ob_tplno Template number within the observation block, indicating the sequence order of exposures. Originating from FITS keyword: HIERARCH ESO OBS TPLNO. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.museTable of the MUSE raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. MUSE information pages are available at: https://archive.eso.org/docurl?MUSE All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal ag_fwhmx_avg Autoguide FWHM mean value in X. Originating from FITS keyword: HIERARCH ESO OCS SGS AG FWHMX AVG. arcsec instr.obsty.seeing;pos.cartesian.x float indexed principal ag_fwhmy_avg Autoguide FWHM mean value in Y. Originating from FITS keyword: HIERARCH ESO OCS SGS AG FWHMY AVG. arcsec instr.obsty.seeing;pos.cartesian.y float indexed principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_binx Binning factor along X. Originating from FITS keyword: HIERARCH ESO DET BINX. arith.factor;pos.cartesian.x int indexed principal det_biny Binning factor along Y. Originating from FITS keyword: HIERARCH ESO DET BINY. arith.factor;pos.cartesian.y int indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal det_read_curname Used readout mode name. Originating from FITS keyword: HIERARCH ESO DET READ CURNAME. meta.id;instr.det;instr.setup char indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal ins_opti1_name Pupil Filter Wheel filter name. Originating from FITS keyword: HIERARCH ESO INS OPTI1 NAME. instr.setup char indexed principal ins_opti2_name Mode Switching Unit field mode. Originating from FITS keyword: HIERARCH ESO INS OPTI2 NAME. instr.setup char indexed principal instrument Name of the instrument. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_parent_id Scheduling parent container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT ID. meta.id.parent;obs.sequence;obs int indexed principal ob_container_parent_type Scheduling parent container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT TYPE. meta.code.class;obs.sequence char indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal ob_tplno Template number within the observation block, indicating the sequence order of exposures. Originating from FITS keyword: HIERARCH ESO OBS TPLNO. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_ambi_temp Average ambient temperature at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees Celsius. Originating from FITS keyword: HIERARCH ESO TEL AMBI TEMP. Celsius phys.temperature;obs.atmos;stat.mean float indexed principal tel_ambi_winddir Average wind direction at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDDIR. deg float indexed principal tel_ambi_windsp Average wind speed at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in meters per second. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDSP. m.s**(-1) phys.veloc;obs.atmos;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.nacoTable of the NACO raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. NACO information pages are available at: https://archive.eso.org/docurl?NACO All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal aos_ins_dich_posnam Motor DICH named position. Originating from FITS keyword: HIERARCH ESO AOS INS DICH POSNAM. meta.id;pos;pos.cartesian char indexed principal aos_ocs_wfs_type Wavefront sensor type. Originating from FITS keyword: HIERARCH ESO AOS OCS WFS TYPE. phys.current;instr.setup char indexed principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_dit Integration time for a single detector readout. For some instruments, this represents the exposure time of a single frame, while for others, it corresponds to an integration step within a multi-readout exposure sequence. The total integration time for an observation may be derived by multiplying det_dit by det_ndit (if applicable). Expressed in seconds. Originating from FITS keyword: HIERARCH ESO DET DIT. s time.duration;instr.det float indexed principal det_mode_name DCS Detector Mode. Originating from FITS keyword: HIERARCH ESO DET MODE NAME. meta.id;instr.det;instr.setup char indexed principal det_ncorrs_name Read-Out Mode Name. Originating from FITS keyword: HIERARCH ESO DET NCORRS NAME. meta.id;instr.det;instr.setup char indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal ins_opti1_name Name of element. Originating from FITS keyword: HIERARCH ESO INS OPTI1 NAME. instr.setup char indexed principal ins_opti2_name Name of element. Originating from FITS keyword: HIERARCH ESO INS OPTI2 NAME. instr.setup char indexed principal ins_opti3_name Name of element. Originating from FITS keyword: HIERARCH ESO INS OPTI3 NAME. instr.setup char indexed principal ins_opti4_name Name of element. Originating from FITS keyword: HIERARCH ESO INS OPTI4 NAME. instr.setup char indexed principal ins_opti5_name Name of element. Originating from FITS keyword: HIERARCH ESO INS OPTI5 NAME. instr.setup char indexed principal ins_opti6_name Name of element. Originating from FITS keyword: HIERARCH ESO INS OPTI6 NAME. instr.setup char indexed principal ins_opti7_name Name of element. Originating from FITS keyword: HIERARCH ESO INS OPTI7 NAME. instr.setup char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal ob_tplno Template number within the observation block, indicating the sequence order of exposures. Originating from FITS keyword: HIERARCH ESO OBS TPLNO. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_ambi_temp Average ambient temperature at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees Celsius. Originating from FITS keyword: HIERARCH ESO TEL AMBI TEMP. Celsius phys.temperature;obs.atmos;stat.mean float indexed principal tel_ambi_winddir Average wind direction at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDDIR. deg float indexed principal tel_ambi_windsp Average wind speed at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in meters per second. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDSP. m.s**(-1) phys.veloc;obs.atmos;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.nirpsTable of the NIRPS raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. NIRPS information pages are available at: https://archive.eso.org/docurl?NIRPS All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal instrument Name of the instrument. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal ob_tplno Template number within the observation block, indicating the sequence order of exposures. Originating from FITS keyword: HIERARCH ESO OBS TPLNO. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.omegacamTable of the OMEGACAM raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. OMEGACAM information pages are available at: https://archive.eso.org/docurl?OMEGACAM All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_dit Integration time for a single detector readout. For some instruments, this represents the exposure time of a single frame, while for others, it corresponds to an integration step within a multi-readout exposure sequence. The total integration time for an observation may be derived by multiplying det_dit by det_ndit (if applicable). Expressed in seconds. Originating from FITS keyword: HIERARCH ESO DET WIN1 DIT1. s time.duration;instr.det float indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET WIN1 NDIT. meta.number;instr.det int indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_filt1_id Unique identifier for the first filter. Originating from FITS keyword: HIERARCH ESO INS FILT1 ID. meta.id;instr.filter char indexed principal ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_parent_id Scheduling parent container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT ID. meta.id.parent;obs.sequence;obs int indexed principal ob_container_parent_type Scheduling parent container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT TYPE. meta.code.class;obs.sequence char indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_ambi_temp Average ambient temperature at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees Celsius. Originating from FITS keyword: HIERARCH ESO TEL AMBI TEMP. Celsius phys.temperature;obs.atmos;stat.mean float indexed principal tel_ambi_winddir Average wind direction at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDDIR. deg float indexed principal tel_ambi_windsp Average wind speed at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in meters per second. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDSP. m.s**(-1) phys.veloc;obs.atmos;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.pionierTable of the PIONIER raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. PIONIER information pages are available at: https://archive.eso.org/docurl?PIONIER All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_dit Integration time for a single detector readout. For some instruments, this represents the exposure time of a single frame, while for others, it corresponds to an integration step within a multi-readout exposure sequence. The total integration time for an observation may be derived by multiplying det_dit by det_ndit (if applicable). Expressed in seconds. Originating from FITS keyword: HIERARCH ESO DET DIT. s time.duration;instr.det float indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_filt2_name Name of the second filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT2 NAME. meta.id;instr.filter char indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal ins_opti2_name OPTIi name. Originating from FITS keyword: HIERARCH ESO INS OPTI2 NAME. instr.setup char indexed principal ins_opti3_name OPTIi name. Originating from FITS keyword: HIERARCH ESO INS OPTI3 NAME. instr.setup char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal iss_baseline Interferometric Array. Originating from FITS keyword: HIERARCH ESO ISS BASELINE. instr.baseline;instr.setup char indexed principal iss_vltitype Type of interferometric observations. Originating from FITS keyword: HIERARCH ESO ISS VLTITYPE. meta.code.class;instr.setup char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_parent_id Scheduling parent container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT ID. meta.id.parent;obs.sequence;obs int indexed principal ob_container_parent_type Scheduling parent container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT TYPE. meta.code.class;obs.sequence char indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO ISS AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO ISS AIRM START. obs.airMass;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.sinfoniTable of the SINFONI raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. SINFONI information pages are available at: https://archive.eso.org/docurl?SINFONI All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal ada_guid_dec Guide star DECLINATION J2000. Originating from FITS keyword: HIERARCH ESO ADA GUID DEC. deg pos.eq.dec;src.calib.guideStar float indexed principal ada_guid_ra Guide star RIGHT ASCENSION J2000. Originating from FITS keyword: HIERARCH ESO ADA GUID RA. deg pos.eq.ra;src.calib.guideStar float indexed principal ada_posang Position angle of the adapter on the sky at exposure start. This angle, often called adapter offset, is measured counter clockwise (N=0, E=90). Originating from FITS keyword: HIERARCH ESO ADA POSANG. deg pos.posAng;time.start float indexed principal aos_rtc_guidestar_magnitude Star magnitude, measured during acquisition. Originating from FITS keyword: HIERARCH ESO AOS RTC GUIDESTAR MAGNITUDE. src.class.starGalaxy;phot.mag float indexed principal aos_rtc_ndwheel_posname Neutral density filter wheel name. Originating from FITS keyword: HIERARCH ESO AOS RTC NDWHEEL POSNAME. meta.id;phys.density;instr.filter char indexed principal aos_rtc_obs_strehlmean The estimated Strehl ratio, evaluated during observation. Originating from FITS keyword: HIERARCH ESO AOS RTC OBS STREHLMEAN. instr.det.psf;arith.ratio double indexed principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_chip_name Detector chip name. Originating from FITS keyword: HIERARCH ESO DET CHIP NAME. meta.id;instr.det char indexed principal det_dit Integration time for a single detector readout. For some instruments, this represents the exposure time of a single frame, while for others, it corresponds to an integration step within a multi-readout exposure sequence. The total integration time for an observation may be derived by multiplying det_dit by det_ndit (if applicable). Expressed in seconds. Originating from FITS keyword: HIERARCH ESO DET DIT. s time.duration;instr.det float indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_grat1_name Grating common name. Originating from FITS keyword: HIERARCH ESO INS GRAT1 NAME. instr.setup char indexed principal ins_grat1_wlen Grating central wavelength [nm]. Originating from FITS keyword: HIERARCH ESO INS GRAT1 WLEN. nm em.wl.central;instr.dispersion float indexed principal ins_mirr1_name Mirror name. Originating from FITS keyword: HIERARCH ESO INS MIRR1 NAME. meta.id;instr.setup char indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal ins_opti1_name OPTIi name. Originating from FITS keyword: HIERARCH ESO INS OPTI1 NAME. instr.setup char indexed principal ins_targ_alpha Instrument center field Alpha coordinate [HHMMSS.TTT]. Originating from FITS keyword: HIERARCH ESO INS TARG ALPHA. instr.setup;instr;pos.eq.ra float indexed principal ins_targ_delta Instrument center field Delta coordinate [HHMMSS.TTT]. Originating from FITS keyword: HIERARCH ESO INS TARG DELTA. instr.setup;instr;pos.eq.dec float indexed principal ins1_mode Instrument mode used. Originating from FITS keyword: HIERARCH ESO INS1 MODE. instr.setup char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal ob_tplno Template number within the observation block, indicating the sequence order of exposures. Originating from FITS keyword: HIERARCH ESO OBS TPLNO. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.sofiTable of the SOFI raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. SOFI information pages are available at: https://archive.eso.org/docurl?SOFI All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_dit Integration time for a single detector readout. For some instruments, this represents the exposure time of a single frame, while for others, it corresponds to an integration step within a multi-readout exposure sequence. The total integration time for an observation may be derived by multiplying det_dit by det_ndit (if applicable). Expressed in seconds. Originating from FITS keyword: HIERARCH ESO DET DIT. s time.duration;instr.det float indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_filt2_name Name of the second filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT2 NAME. meta.id;instr.filter char indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.sphereTable of the SPHERE raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. SPHERE information pages are available at: https://archive.eso.org/docurl?SPHERE All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_dit1 Actual integration time for each exposure step. Originating from FITS keyword: HIERARCH ESO DET DIT1. s time.duration;instr.det;obs.exposure double indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal det_read_curname Used readout mode name. Originating from FITS keyword: HIERARCH ESO DET READ CURNAME. meta.id;instr.det;instr.setup char indexed principal det_seq1_dit Integration time. Originating from FITS keyword: HIERARCH ESO DET SEQ1 DIT. s time.duration;instr.det float indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_comb_icor Infra-Red coronograph combination name. Originating from FITS keyword: HIERARCH ESO INS COMB ICOR. meta.id;instr.setup;instr char indexed principal ins_comb_iflt Infra-Red filter combination name. Originating from FITS keyword: HIERARCH ESO INS COMB IFLT. meta.id;instr.filter char indexed principal ins_comb_pola Polarisation combination name. Originating from FITS keyword: HIERARCH ESO INS COMB POLA. instr.setup;phys.polarization char indexed principal ins_comb_vcor Visible coronograph combination name. Originating from FITS keyword: HIERARCH ESO INS COMB VCOR. meta.id;instr.setup;instr char indexed principal ins1_filt_name IRDIS filter name. Originating from FITS keyword: HIERARCH ESO INS1 FILT NAME. meta.id;instr.filter char indexed principal ins1_opti1_name IRDIS Lyot stop. Originating from FITS keyword: HIERARCH ESO INS1 OPTI1 NAME. instr.setup char indexed principal ins1_opti2_name IRDIS Dual Filter. Originating from FITS keyword: HIERARCH ESO INS1 OPTI2 NAME. instr.setup;instr.filter char indexed principal ins2_opti2_name IFS disperser selector. Originating from FITS keyword: HIERARCH ESO INS2 OPTI2 NAME. instr.setup;instr.filter char indexed principal ins3_opti5_name ZIMPOL filter in arm 1. Originating from FITS keyword: HIERARCH ESO INS3 OPTI5 NAME. instr.setup;instr.filter char indexed principal ins3_opti6_name ZIMPOL filter in arm 2. Originating from FITS keyword: HIERARCH ESO INS3 OPTI6 NAME. instr.setup;instr.filter char indexed principal ins4_drot2_mode Instrument derotator mode. Originating from FITS keyword: HIERARCH ESO INS4 DROT2 MODE. instr.setup char indexed principal ins4_opti11_name NIR coronagraphs wheel. Originating from FITS keyword: HIERARCH ESO INS4 OPTI11 NAME. instr.setup;instr.filter;instr char indexed principal instrument Name of the instrument. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_parent_id Scheduling parent container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT ID. meta.id.parent;obs.sequence;obs int indexed principal ob_container_parent_type Scheduling parent container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT TYPE. meta.code.class;obs.sequence char indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal ob_tplno Template number within the observation block, indicating the sequence order of exposures. Originating from FITS keyword: HIERARCH ESO OBS TPLNO. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle short indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal seq_arm Name of the sub-system. Originating from FITS keyword: HIERARCH ESO SEQ ARM. meta.id;instr.det char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_ambi_temp Average ambient temperature at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees Celsius. Originating from FITS keyword: HIERARCH ESO TEL AMBI TEMP. Celsius phys.temperature;obs.atmos;stat.mean float indexed principal tel_ambi_winddir Average wind direction at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDDIR. deg float indexed principal tel_ambi_windsp Average wind speed at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in meters per second. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDSP. m.s**(-1) phys.veloc;obs.atmos;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal tel_ia_fwhm Calculated seeing from a selection of spots on the Shack-Hartmann detector, corrected by observed airmass. Originating from FITS keyword: HIERARCH ESO TEL IA FWHM. arcsec instr.obsty.seeing;obs.airMass float indexed principal tel_ia_fwhmlin Delivered seeing on IA detector (linear fit). Calculated seeing from a selection of spots on the Shack-Hartmann detector, corrected by observed airmass. Logged when a new value is available, typically on each AO loop. Originating from FITS keyword: HIERARCH ESO TEL IA FWHMLIN. arcsec instr.obsty.seeing;stat.fit float indexed principal tel_ia_fwhmlinobs Delivered seeing on IA detector (linear fit). Calculated seeing from a selection of spots on the Shack-Hartmann detector. Originating from FITS keyword: HIERARCH ESO TEL IA FWHMLINOBS. arcsec instr.obsty.seeing;stat.fit float indexed principal telescope Identifier and/or name of the telescope used for the observation. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.uvesTable of the UVES raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. UVES information pages are available at: https://archive.eso.org/docurl?UVES All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal arm_name Instrument arm name (BLUE, RED). meta.id;instr.det char indexed principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_read_clock Readout clock pattern used. Originating from FITS keyword: HIERARCH ESO DET READ CLOCK. meta.id;instr.det char indexed principal det_win1_binx Binning factor along X. Originating from FITS keyword: HIERARCH ESO DET WIN1 BINX. arith.factor;pos.cartesian.x short indexed principal det_win1_biny Binning factor along Y. Originating from FITS keyword: HIERARCH ESO DET WIN1 BINY. arith.factor;pos.cartesian.y short indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed grat_wlen Grating central wavelength [nm]. nm em.wl.central;instr.dispersion float indexed principal ins_filt1_id Unique identifier for the first filter. Originating from FITS keyword: HIERARCH ESO INS FILT1 ID. meta.id;instr.filter char indexed principal ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_filt2_name Name of the second filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT2 NAME. meta.id;instr.filter char indexed principal ins_filt3_name ESO name for the filter. Originating from FITS keyword: HIERARCH ESO INS FILT3 NAME. meta.id;instr.filter char indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal ins_obsplate Observing plate - plate producing. Originating from FITS keyword: HIERARCH ESO INS OBSPLATE. meta.id;instr.setup short indexed principal ins_slit1_name Slit common name. Originating from FITS keyword: HIERARCH ESO INS SLIT1 NAME. instr.setup char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_parent_id Scheduling parent container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT ID. meta.id.parent;obs.sequence;obs int indexed principal ob_container_parent_type Scheduling parent container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT TYPE. meta.code.class;obs.sequence char indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal slit_len Slit length [arcsec]. arcsec instr.setup float indexed principal slit_wid Slit width [arcsec]. arcsec instr.setup float indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.vimosTable of the VIMOS raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. VIMOS information pages are available at: https://archive.eso.org/docurl?VIMOS All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_filt_name Filter name. meta.id;instr.filter char indexed principal ins_filt1_id Unique identifier for the first filter. Originating from FITS keyword: HIERARCH ESO INS FILT1 ID. meta.id;instr.filter char indexed principal ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_filt2_name Name of the second filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT2 NAME. meta.id;instr.filter char indexed principal ins_gris_name Grism name. instr.setup char indexed principal ins_ifue_mag IFU Magnification 0.33(1:2) or 0.67(1:1). Originating from FITS keyword: HIERARCH ESO INS IFUE MAG. meta.id;instr.setup char indexed principal ins_ifus_mode IFU Shutter CLOSED(ON) or OPEN(OFF). Originating from FITS keyword: HIERARCH ESO INS IFUS MODE. instr.setup char indexed principal ins_mask_id Mask identification number. meta.id;instr.setup int indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal ocs_con_quad Quadrant Number. Originating from FITS keyword: HIERARCH ESO OCS CON QUAD. meta.number;instr.det short indexed principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.vircamTable of the VIRCAM raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. VIRCAM information pages are available at: https://archive.eso.org/docurl?VIRCAM All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_dit Integration time for a single detector readout. For some instruments, this represents the exposure time of a single frame, while for others, it corresponds to an integration step within a multi-readout exposure sequence. The total integration time for an observation may be derived by multiplying det_dit by det_ndit (if applicable). Expressed in seconds. Originating from FITS keyword: HIERARCH ESO DET DIT. s time.duration;instr.det float indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime The total integration time for the observation. Unlike other infrared instruments, this does not correspond to det_dit but to the full exposure duration. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_filt1_focus Optical focus offset (in mm) introduced by the filter and corrected by the telescope. Originating from FITS keyword: HIERARCH ESO INS FILT1 FOCUS. mm instr.tel.focalLength;arith.diff;instr.offset float indexed principal ins_filt1_id Unique identifier for the first filter. Originating from FITS keyword: HIERARCH ESO INS FILT1 ID. meta.id;instr.filter char indexed principal ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_filt1_wlen Filter effective wavelength [nm]. Originating from FITS keyword: HIERARCH ESO INS FILT1 WLEN. nm em.wl.effective;instr.filter float indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal njitter Number of jitter positions. Originating from FITS keyword: NJITTER. meta.number;pos;pos.cartesian int indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal offset_i Sequence number of offset. Originating from FITS keyword: OFFSET_I. meta.number;obs.sequence;arith.diff int indexed principal offset_id Name of offset pattern. Originating from FITS keyword: OFFST_ID. meta.id;arith.diff;instr.offset char indexed principal offset_x X offset [arcsec]. Originating from FITS keyword: OFFSET_X. arcsec pos.cartesian.x;arith.diff;instr.offset float indexed principal offset_y Y offset [arcsec]. Originating from FITS keyword: OFFSET_Y. arcsec pos.cartesian.y;arith.diff;instr.offset float indexed principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.visirTable of the VISIR raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. VISIR information pages are available at: https://archive.eso.org/docurl?VISIR All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_dit Integration time for a single detector readout. For some instruments, this represents the exposure time of a single frame, while for others, it corresponds to an integration step within a multi-readout exposure sequence. The total integration time for an observation may be derived by multiplying det_dit by det_ndit (if applicable). Expressed in seconds. Originating from FITS keyword: HIERARCH ESO DET DIT (for original VISIR (2004-2016)) and HIERARCH ESO DET SEQ1 DIT (for the upgraded VISIR (2016 onward)). s time.duration;instr.det float indexed principal det_exp_no Unique exposure ID number. Originating from FITS keyword: HIERARCH ESO DET EXP NO. meta.id;instr.det;obs.exposure int indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal det_seq1_dit Integration time for a single detector readout. For some instruments, this represents the exposure time of a single frame, while for others, it corresponds to an integration step within a multi-readout exposure sequence. The total integration time for an observation may be derived by multiplying det_dit by det_ndit (if applicable). Expressed in seconds. Originating from FITS keyword: HIERARCH ESO DET SEQ1 DIT. s time.duration;instr.det float indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_filt1_id Unique identifier for the first filter. Originating from FITS keyword: HIERARCH ESO INS FILT1 ID. meta.id;instr.filter char indexed principal ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_filt2_name Name of the second filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT2 NAME. meta.id;instr.filter char indexed principal ins_grat1_name Grating name selection. Originating from FITS keyword: HIERARCH ESO INS GRAT1 NAME. instr.setup char indexed principal ins_grat1_wlen Grating central wavelength [um]. Originating from FITS keyword: HIERARCH ESO INS GRAT1 WLEN. um em.wl.central;instr.dispersion float indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal ins_pfov Magnification of the imager used. Originating from FITS keyword: HIERARCH ESO INS PFOV. instr.setup;instr.fov;instr.pixel char indexed principal ins_resol Resolution of the spectrometer used. Originating from FITS keyword: HIERARCH ESO INS RESOL. instr.setup;instr;pos.resolution char indexed principal ins_slit1_wid Slit width [arcsec]. Originating from FITS keyword: HIERARCH ESO INS SLIT1 WID. arcsec instr.setup;stat.value float indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_parent_id Scheduling parent container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT ID. meta.id.parent;obs.sequence;obs int indexed principal ob_container_parent_type Scheduling parent container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT TYPE. meta.code.class;obs.sequence char indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. Originating from FITS keyword: HIERARCH ESO OBS NAME. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal ob_tplno Template number within the observation block, indicating the sequence order of exposures. Originating from FITS keyword: HIERARCH ESO OBS TPLNO. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal seq_chopnod_dir Chopping Nodding direction (PARALLEL or PERPENDICULAR). Originating from FITS keyword: HIERARCH ESO SEQ CHOPNOD DIR. meta.id;instr.det char indexed principal seq_time Total integration time. Originating from FITS keyword: HIERARCH ESO SEQ TIME. s time;instr.setup;obs.sequence int indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_irsky_temp Temperature of the IR sky at zenith, measured over the 9.2-10.6 mic. band. Accuracy 1 deg C. Noise 0.2K. Originating from FITS keyword: HIERARCH ESO TEL AMBI IRSKY TEMP. Celsius instr.skyTemp;phys.temperature;em.IR float indexed principal tel_ambi_iwv_start Average of the Integrated Water Vapor measurements towards zenith over the previous 2min at start of exposure. Originating from FITS keyword: HIERARCH ESO TEL AMBI IWV START. mm float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_ambi_temp Average ambient temperature at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees Celsius. Originating from FITS keyword: HIERARCH ESO TEL AMBI TEMP. Celsius phys.temperature;obs.atmos;stat.mean float indexed principal tel_ambi_winddir Average wind direction at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDDIR. deg float indexed principal tel_ambi_windsp Average wind speed at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in meters per second. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDSP. m.s**(-1) phys.veloc;obs.atmos;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal tel_chop_freq Frequency of chopping cycle in Hz. Originating from FITS keyword: HIERARCH ESO TEL CHOP FREQ. Hz instr.tel;em.freq float indexed principal tel_chop_posang [deg] Orientation on sky (N=0 E=90). Originating from FITS keyword: HIERARCH ESO TEL CHOP POSANG. deg pos.posAng;instr.skyLevel;phys.angSize float indexed principal tel_chop_throw [arcsec] Maximum amplitude available dependent on chop period. Originating from FITS keyword: HIERARCH ESO TEL CHOP THROW. arcsec src.var.amplitude;stat.max;time.period float indexed principal tel_ia_fwhmlinobs Delivered seeing on IA detector (linear fit). Calculated seeing from a selection of spots on the Shack-Hartmann detector. Originating from FITS keyword: HIERARCH ESO TEL IA FWHMLINOBS. arcsec instr.obsty.seeing;stat.fit float indexed principal tel_th_m1_temp [deg C] M1 superficial temperature. Originating from FITS keyword: HIERARCH ESO TEL TH M1 TEMP. Celsius instr.skyTemp;instr.tel;phys.temperature float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ist.wlgsuTable of the WLGSU raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. WLGSU information pages are available at: https://archive.eso.org/docurl?WLGSU All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal airmass Airmass. Originating from FITS keyword: AIRMASS. obs.airMass float indexed principal avgseeing [arcsec] average seeing, lambda/r0(500nm). instr.obsty.seeing;stat.mean float indexed principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed hbar_aft [m] turbulence median height (after). Originating from FITS keyword: HBAR_AFT. m phys.size;stat.median float indexed principal hbar_bef [m] turbulence median height (before). Originating from FITS keyword: HBAR_BEF. m phys.size;stat.median float indexed principal instrument Name of the instrument. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal int_data Availability of INT data. Originating from FITS keyword: INT_DATA. meta.code.status char indexed principal l0_aft [m] L0 (500nm, after). Originating from FITS keyword: L0_AFT. m stat.value float indexed principal l0_bef [m] L0 (500nm, before). Originating from FITS keyword: L0_BEF. m stat.value float indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lgs_flux [photoel/s/m2] average LGS flux. Originating from FITS keyword: LGS_FLUX. s**(-1).m**(-2) phot.flux;stat.mean;phys.flux float indexed principal lgs_vibr presence of vibration in LGS frames. Originating from FITS keyword: LGS_VIBR. meta.code.status char indexed principal lgslength [arcsec] average length of LGS plume. arcsec phys.angSize;stat.mean float indexed principal llt_pow [W] Laser emitted power. Originating from FITS keyword: LLT_POW. W float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal nrec number of records in the file. Originating from FITS keyword: NREC. meta.record;meta.file int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal r0_calc [m] r0 (500nm). Originating from FITS keyword: R0_CALC. m stat.value float indexed principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal sqz_ima number of squeezed frames. Originating from FITS keyword: SQZ_IMA. meta.number;obs.field;pos.frame int indexed principal telescope Identifier and/or name of the telescope used for the observation. meta.id;instr.tel char indexed principal turb_aft Availability of Cn2 profile (after). Originating from FITS keyword: TURB_AFT. meta.code.status char indexed principal turb_bef Availability of Cn2 profile (before). Originating from FITS keyword: TURB_BEF. meta.code.status char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal wind_aft [m/s] wind speed (after). Originating from FITS keyword: WIND_AFT. m.s**(-1) phys.veloc;obs.atmos;time.end float indexed principal wind_bef [m/s] wind speed (before). Originating from FITS keyword: WIND_BEF. m.s**(-1) phys.veloc;obs.atmos;time.start float indexed principal

ist.xshooterTable of the XSHOOTER raw data. Each record corresponds to one raw file and provides information about the observed target, observing programme, related telescope/instrument setup parameters, and ambient conditions. XSHOOTER information pages are available at: https://archive.eso.org/docurl?XSHOOTER All users of the ESO science archive are required to acknowledge the source of the data with an appropriate citation in their publications, as per: https://archive.eso.org/docurl?acknowledgement access_estsize Estimated size of the downloaded file in kilo bytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file obscore:Access.size long principal access_url A direct URL for downloading the raw data file. If the file is under a proprietary period, access is restricted to authenticated users with the necessary permissions. meta.ref.url;meta.file Access.Reference char principal datalink_url A URL that can be used to find the access points of the raw file itself, as well as all its related files. Related files include the calibration files necessary to reduce a science raw frame (see calSelector entries) and, if available, a list of calibrated product(s) generated from it. meta.ref.url;meta.dataset datalink:Access.Reference char principal date_obs A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs.exposure char indexed principal dec Declination of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: DEC. deg pos.eq.dec;meta.main eso:pointing.location.Coord.Position2D.Value2.C2 double indexed principal det_dit Integration time for a single detector readout. For some instruments, this represents the exposure time of a single frame, while for others, it corresponds to an integration step within a multi-readout exposure sequence. The total integration time for an observation may be derived by multiplying det_dit by det_ndit (if applicable). Expressed in seconds. Originating from FITS keyword: HIERARCH ESO DET DIT. s time.duration;instr.det float indexed principal det_ndit Number of subintegrations (readout steps) performed within a single exposure. The total effective integration time for an observation can be computed as: total integration time = det_dit x det_ndit. Originating from FITS keyword: HIERARCH ESO DET NDIT. meta.number;instr.det int indexed principal det_read_clock Readout clock pattern used. Originating from FITS keyword: HIERARCH ESO DET READ CLOCK. meta.id;instr.det char indexed principal det_win1_binx Binning factor along X. Originating from FITS keyword: HIERARCH ESO DET WIN1 BINX. arith.factor;pos.cartesian.x short indexed principal det_win1_biny Binning factor along Y. Originating from FITS keyword: HIERARCH ESO DET WIN1 BINY. arith.factor;pos.cartesian.y short indexed principal dimm_fwhm_avg Average seeing measured by the DIMM. Expressed in arcseconds. arcsec instr.obsty.seeing;stat.mean float indexed principal dimm_fwhm_rms The RMS of the seeing measurement from DIMM. Expressed in arcseconds. arcsec stat.rms;instr.obsty.seeing float indexed principal dp_cat Data product category for the observation. Originating from FITS keyword: HIERARCH ESO DPR CATG. meta.code.class;obs.exposure;meta.main char indexed principal dp_id Primary unique identifier for the ESO archive file. meta.id;meta.file;meta.main eso:Curation.PublisherDID char indexed principal dp_tech Observation technique or methodology employed. Originating from FITS keyword: HIERARCH ESO DPR TECH. meta.code.class;obs.exposure;instr.setup char indexed principal dp_type Type of observation, categorized by predefined classes for each instrument. Originating from FITS keyword: HIERARCH ESO DPR TYPE. meta.code.class;obs.exposure char indexed principal ecl_lat Ecliptic latitude of the observation. Expressed in degrees. deg pos.ecliptic.lat ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed ecl_lon Ecliptic longitude of the observation. Expressed in degrees. deg pos.ecliptic.lon ecliptic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed exp_start Date and time of exposure start (Universal Time Coordinated - UTC). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)Z', with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000Z). With xtype = timestamp, and as such is a properly formatted, queryable time field. Originating from FITS keyword: MJD-OBS. time.start;obs.exposure char indexed principal exposure Total exposure time for the observation. Expressed in seconds. s time.duration;obs.exposure float indexed principal exptime Integration time for a single observation. In infrared instruments (except VIRCAM), this corresponds to det_dit, since the counts of a single raw frame are averaged over det_ndit subintegrations. In all other instruments, this is the total integration time. Expressed in seconds. Originating from FITS keyword: EXPTIME. s time.duration;obs.exposure float indexed principal gal_lat Galactic latitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon Galactic longitude of the pointing (derived from ra/dec columns). Expressed in degrees. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed ins_filt1_id Unique identifier for the first filter. Originating from FITS keyword: HIERARCH ESO INS FILT1 ID. meta.id;instr.filter char indexed principal ins_filt1_name Name of the first filter, following ESO naming conventions. Originating from FITS keyword: HIERARCH ESO INS FILT1 NAME. meta.id;instr.filter char indexed principal ins_mode Operational mode of the instrument as configured for the observation. Originating from FITS keyword: HIERARCH ESO INS MODE. instr.setup char indexed principal ins_opti2_name OPTIi name. Originating from FITS keyword: HIERARCH ESO INS OPTI2 NAME. instr.setup char indexed principal ins_opti3_name OPTIi name. Originating from FITS keyword: HIERARCH ESO INS OPTI3 NAME. instr.setup char indexed principal ins_opti4_name Name of element. Originating from FITS keyword: HIERARCH ESO INS OPTI4 NAME. instr.setup char indexed principal ins_opti5_name Name of element. Originating from FITS keyword: HIERARCH ESO INS OPTI5 NAME. instr.setup char indexed principal instrument Name of the instrument. Originating from FITS keyword: INSTRUME. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal lambda_max Maximum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal lambda_min Minimum wavelength of the overall transmission curve (filter/grating/grism + detector + optics), expressed in nanometers; currently available only for images. Note: a constraint on this field limits the search to imaging data only. nm em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal last_mod_date Datetime value when the record was either published or last modified (UTC). Typical use case: last_mod_date > 'X' will find any data that have been published, or that have been modified, since date X. Wild cards are not permitted on a datetime column (xtype=timestamp). Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)'. time ssa:Curation.Date char indexed principal lst Local Sidereal Time at the start of the observation, expressed in seconds since sidereal midnight. Originating from FITS keyword: LST. s time.interval float indexed principal mjd_obs Modified Julian Date (MJD) of the start of the exposure (UTC). Originating from FITS keyword: MJD-OBS. d time.start;obs.exposure double indexed principal moon_illu Fraction of the Moon's illumination at the time of observation (percentage, negative when the Moon below the horizon). meta.code short indexed principal night_flag This column indicates whether the observation was taken during the 'night', 'twilight' or 'day'. meta.code char indexed principal ob_container_id Scheduling container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER ID. meta.id;obs.sequence int indexed principal ob_container_parent_id Scheduling parent container ID. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT ID. meta.id.parent;obs.sequence;obs int indexed principal ob_container_parent_type Scheduling parent container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER PARENT TYPE. meta.code.class;obs.sequence char indexed principal ob_container_type Scheduling container type. Originating from FITS keyword: HIERARCH ESO OBS CONTAINER TYPE. meta.code.class;obs.sequence char indexed principal ob_id Unique identifier for this observation block. Originating from FITS keyword: HIERARCH ESO OBS ID. meta.id;obs int indexed principal ob_name Name of the observation block, following ESO conventions. meta.id;obs char indexed principal ob_start A string (varchar, not a datetime) representing the start time of the observing block (OB). It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO OBS START. time.start;obs char indexed principal ob_targ_name Identifier or name of the target defined in the Observing Block (OB). The target name as defined by the Principal Investigator (PI) during Phase 2. Originating from FITS keyword: HIERARCH ESO OBS TARG NAME. meta.id;src char indexed principal ob_tplno Template number within the observation block, indicating the sequence order of exposures. Originating from FITS keyword: HIERARCH ESO OBS TPLNO. meta.id;obs int indexed principal object Identifier or name of the target observed. It is either the target designation (as given by the astronomer) for science exposures, or the exposure type for non-science frames (e.g. FLAT,LAMP). Originating from FITS keyword: OBJECT. meta.id;src;meta.main char indexed principal observing_mode Observation mode, indicating whether the observation was executed in 'Service' or 'Visitor' mode. obs.param char principal origfile Name of the frame when it was generated on instrument workstation. Originating from FITS keyword: ORIGFILE. meta.id;meta.file char indexed principal period ESO cycle of proposal is based on semester called periods; e.g., period 113 covers the semeser 1 April 2024 - 30 September 2024. obs.proposal.cycle int indexed principal pi_coi Names of the Principal Investigator (PI) and Co-Investigator(s) associated with the observation. meta.id.PI char indexed principal prog_id Identifier for the ESO observing program linked to the observation. Originating from FITS keyword: HIERARCH ESO OBS PROG ID. meta.id;obs.proposal char indexed principal prog_title Title of the ESO observing program. meta.title;obs.proposal char principal prog_type Program Type, indicating whether the ESO observing program was a 'Normal', 'GTO' (Guaranteed Time Observations), 'DDT' (Director's Discretionary Time), 'ToO' (Target of Opportunity), 'Large', 'Short', 'Calibration' or 'Monitoring' program. meta.code.class;obs.proposal char principal ra Right Ascension of the pointing (FK5). Expressed in degrees. Originating from FITS keyword: RA. deg pos.eq.ra;meta.main eso:pointing.location.Coord.Position2D.Value2.C1 double indexed principal release_date The datetime value when the data exit the proprietary period. Before such date, only principal investigator (and delegates) are authorised to download the data; after that, the file is publicly available. Expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS(.sss)' (UTC), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00.000). Wild cards are not permitted on a datetime column (xtype=timestamp). time.release;obs.exposure obscore:Curation.releaseDate char indexed principal s_region The s_region parameter defines the spatial region of an observation. For example, a query can retrieve all records within a 1-degree radius around a given RA and Dec in a particular table (e.g. ist.amber) - SELECT * FROM ist.amber WHERE CONTAINS(s_region, CIRCLE('', 56.3, 20, 1)) = 1. The output provides the spatial coordinates of the raw dataset as POSITION (RA, Dec). Since raw data footprints are not available, this serves as a reference for the observation's position. pos.outline;obs.field Char.SpatialAxis.Coverage.Location.Coord.Position2D char indexed principal seq_arm Instrument Arm. Originating from FITS keyword: HIERARCH ESO SEQ ARM. meta.id;instr.det char indexed principal seq_jitter_width Width of the Jitter box in arcsec. Originating from FITS keyword: HIERARCH ESO SEQ JITTER WIDTH. arcsec instr.setup;stat.value int indexed principal seq_nod_throw Nodding throw length in arcsec. Originating from FITS keyword: HIERARCH ESO SEQ NOD THROW. arcsec instr.setup;stat.value float indexed principal tel_airm_end Airmass value at the end of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM END. obs.airMass;time.end float indexed principal tel_airm_start Airmass value at the start of the observation. Originating from FITS keyword: HIERARCH ESO TEL AIRM START. obs.airMass;time.start float indexed principal tel_alt Telescope altitude angle at the start of the observation. Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL ALT. deg pos.az.alt;time.start float indexed principal tel_ambi_fwhm_end Site seeing at the end of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM END. arcsec instr.obsty.seeing;time.end float indexed principal tel_ambi_fwhm_start Site seeing at the start of the observation as measured by the ASM (Astronomical Site Monitor). FWHM at 0.5 um, in arcseconds. Originating from FITS keyword: HIERARCH ESO TEL AMBI FWHM START. arcsec instr.obsty.seeing;time.start float indexed principal tel_ambi_pres_end Average site barometric air pressure at the end of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES END. hPa phys.pressure;obs.atmos;time.end float indexed principal tel_ambi_pres_start Average site barometric air pressure at the start of the observation, as measured by the ASM (Astronomical Site Monitor). Expressed in hectopascal. Originating from FITS keyword: HIERARCH ESO TEL AMBI PRES START. hPa phys.pressure;obs.atmos;time.start float indexed principal tel_ambi_rhum Average ambient relative humidity at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed as a percentage. Originating from FITS keyword: HIERARCH ESO TEL AMBI RHUM. % obs.atmos.humidity;arith.ratio;stat.mean float indexed principal tel_ambi_temp Average ambient temperature at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees Celsius. Originating from FITS keyword: HIERARCH ESO TEL AMBI TEMP. Celsius phys.temperature;obs.atmos;stat.mean float indexed principal tel_ambi_winddir Average wind direction at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in degrees. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDDIR. deg float indexed principal tel_ambi_windsp Average wind speed at the observation site, as measured by the ASM (Astronomical Site Monitor). Expressed in meters per second. Originating from FITS keyword: HIERARCH ESO TEL AMBI WINDSP. m.s**(-1) phys.veloc;obs.atmos;stat.mean float indexed principal tel_az Telescope azimuth angle at the start of the observation. Expressed in degrees (0° = South, 90° = West). Originating from FITS keyword: HIERARCH ESO TEL AZ. deg pos.az.azi;time.start float indexed principal tel_ia_fwhm Calculated seeing from a selection of spots on the Shack-Hartmann detector, corrected by observed airmass. Originating from FITS keyword: HIERARCH ESO TEL IA FWHM. arcsec instr.obsty.seeing;obs.airMass float indexed principal telescope Identifier and/or name of the telescope used for the observation. Originating from FITS keyword: TELESCOP. meta.id;instr.tel char indexed principal tpl_expno Exposure sequence number within the template. Starts at 1. Originating from FITS keyword: HIERARCH ESO TPL EXPNO. meta.id;obs.exposure int indexed principal tpl_id Unique identifier for the observation template. Originating from FITS keyword: HIERARCH ESO TPL ID. meta.id char indexed principal tpl_name Name of the observation template. Originating from FITS keyword: HIERARCH ESO TPL NAME. meta.id;instr.setup;meta.main char indexed principal tpl_nexp Total number of exposures defined in the observation template. Originating from FITS keyword: HIERARCH ESO TPL NEXP. meta.number;obs.exposure int indexed principal tpl_start A string (varchar, not a datetime) representing the start time of a template inside an observing block. It can be used to match (also using SQL wild cards) the string expressed as ISO 8601 compliant date-time format 'YYYY-MM-DDTHH:MM:SS' (accurate to the second), with a 'T' separating the date and time (e.g., 2000-01-01T00:00:00). Not being a datetime field, date functions like ESO_DATEADD_SEC cannot be used on this column. Originating from FITS keyword: HIERARCH ESO TPL START. time.start;obs.exposure char indexed principal utc Universal Time (UTC) at the start of the exposure, expressed as the number of seconds elapsed since midnight. Originating from FITS keyword: UTC. s time.interval float indexed principal

ivoa Collection of tables for IVOA data models with standard relational mappings ivoa.ObsCoreTable of all ESO reduced data products. It provides browsing capability and access point to all reduced data (spectra, images, spectral data cubes, visibilities) and derived products (source tables, catalog tiles, catalogs). The table structure (column names, formats, units, UCDs, utypes) and its access is regulated by the ObsCore standard of the Virtual Observatory (v1.1, 2017-05-09); hence, it is guaranteed that the same data discovery query can be sent unchanged to all data centres supporting ObsCore.obscore: abmaglim ESO-specific field not present in the standard ObsCore. 5-sigma limiting AB (Oke) magnitude. The quoted magnitude should refer to the total flux of a point source. Applicable to the following data product type: cube, image, and measurements. mag phot.mag;stat.max double indexed access_estsize Estimated size of the downloaded file in KBytes. kbyte phys.size;meta.file obscore:Access.size long indexed principal access_format The format of the downloaded file. meta.code.mime obscore:Access.format char principal access_url A URL that points to the DataLink (VO Standard) service that is used to download the dataset, associated files, their provenance or derived products, etc. meta.ref.url obscore:Access.reference char principal bib_reference URL or bibcode to the main publication that refers to the data set. meta.bib.bibcode obscore:Curation.reference char indexed calib_level Calibration level: 0-instrument (raw) data in non-standard format, 1-instrumental (raw) data in standard format, 2-science ready data with instrument signature removed, 3-more highly processed data. Ref. PRODLVL keyword in ESO SDP standard if present, otherwise: set to 3 when dataproduct_type contains token deep or tile, set to 4 for catalogs. meta.code;obs.calib obscore:ObsDataset.calibLevel int indexed principal dataproduct_subtype A data-provider/collection specific secondary type, e.g. srctbl or catalog for measurements, tile or pawprint for VISTA images, etc. meta.code.class obscore:ObsDataset.dataProductSubtype char indexed dataproduct_type Logical data set type (image, spectrum, visibility, cube, measurements, etc.) meta.code.class obscore:ObsDataset.dataProductType char indexed principal dp_id ESO-specific field not present in the standard ObsCore. The original ESO identifier of the main science file. ObsCore uses obs_publisher_did, which returns the full IVO Identifier. This field can be used to join with other ESO (non-VO) tables, like provenance. meta.id char indexed em_max Maximum spectral value observed, expressed in vacuum wavelength in meters; ref. WAVELMAX keyword in ESO SDP standard. m em.wl;stat.max obscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimit double indexed principal em_min Minimum specrtal value observed, expressed in vacuum wavelength in meters; ref. WAVELMIN keyword in ESO SDP standard. m em.wl;stat.min obscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimit double indexed principal em_res_power The characteristic spectral resolving power (lambda/delta(lambda)) of the data set. Ref. SPECRES keyword in ESO SDP standard, computed from em_min and em_max when SPECRES not provided := central lambda / delta(lambda) = 0.5*(wavelmin+wavelmax) / (wavelmax-wavelmin) spect.resolution obscore:Char.SpectralAxis.Resolution.ResolPower.refVal double indexed principal em_xel Number of elements on the spectral axis. meta.number obscore:Char.SpectralAxis.numBins long principal facility_name Name of the ESO telescope utilised to gather the photons. Possible values are: APEX-12m ESO-3.6 ESO-NTT ESO-VISTA ESO-VLT-U1 ESO-VLT-U2 ESO-VLT-U3 ESO-VLT-U4 ESO-VST MPG/ESO-2.2, and more to come, plus any combination of those (comma-separated), or the word MULTI. meta.id;instr.tel obscore:Provenance.ObsConfig.Facility.name char indexed principal filter ESO-specific field not present in the standard ObsCore. The ESO instrument filter name. ObsCore uses em_min, em_max, and em_res_power to characterise the transmission curve of the bandpass; this field can be used to improve readibility. meta.id;instr.filter char indexed gal_lat ESO-specific field not present in the standard ObsCore. Galactic coordinate: latitude; Image/tile/cube centre, barycentre of image arrays in MEF format ; spectroscopic target position; centre of the survey field in case of catalogues. deg pos.galactic.lat galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed gal_lon ESO-specific field not present in the standard ObsCore. Galactic coordinate: longitude; Image/tile/cube centre, barycentre of image arrays in MEF format ; spectroscopic target position; centre of the survey field in case of catalogues. deg pos.galactic.lon galactic:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed instrument_name Name of the instrument(s) utilised to gather the data; if the data set combines multiple instruments, usually the value MULTI is assigned. meta.id;instr obscore:Provenance.ObsConfig.Instrument.name char indexed principal is_solar A flag indicating whether the target is the Sun (1) or not (0). It is currently known to be properly set for ALMA products, and for the ESO HELIOS (feeding HARPS and NIRPS) and POET (feeding ESPRESSO) solar telescopes. short principal last_mod_date Time stamp of last modification of the metadata time ssa:Curation.Date char indexed principal multi_ob ESO-specific field not present in the standard ObsCore. A flag, either M or S. M-Multi OB means that the exposures from different telescope visits have been combined together; S-Single OB means that the product is the result of either a single exposure, or of the combination of exposures taken during the same visit, hence with similar atmospheric conditions, airmasses, etc. meta.code.multip;obs char n_obs ESO-specific field not present in the standard ObsCore. Number of observations participating into this data product. meta.number;obs int o_calib_status Level of the calibration of the observable (e.g. flux). meta.code.qual obscore:Char.ObservableAxis.calibrationStatus char principal o_ucd Nature of the observable within the data set, expressed as an Uniform Content Descriptor (IVOA standard). meta.ucd obscore:Char.ObservableAxis.ucd char principal obs_collection The name of the data collection the data set belongs to. meta.id obscore:DataID.collection char indexed principal obs_creator_did The original file name as assigned by the data producer, in form of a IVOA identifier. meta.id obscore:DataID.creatorDID char indexed obs_creator_name The Principal Investigator either of the team that provided the data set to ESO through the Phase 3 process, or of the observing team in case the data have been certified by ESO. meta.id obscore:DataID.creator char indexed principal obs_id In case multiple data sets are available for an observation, e.g. with different calibration levels, the obs_id value will be the same for each data set the observation comprises. The obs_id should remain identical through time for future reference. meta.id obscore:DataID.observationID char indexed principal obs_publisher_did IVOA dataset identifier for the published data set. It must be unique within the namespace controlled by the publisher. meta.ref.ivoid obscore:Curation.publisherDID char indexed principal obs_release_date The date when the data set becomes public. time.release obscore:Curation.releaseDate char indexed principal obs_title It should contain a brief description (displayable in less than one line of text) specifying in scientific terms the content of the dataset. meta.title;obs obscore:DataID.title char principal obstech ESO-specific field not present in the standard ObsCore. Technique used during the observation. Normally, OBSTECH should be adopted from the keyword HIERARCH ESO DPR TECH of the original data. instr.setup char p3orig ESO-specific field not present in the standard ObsCore. Possible values: EDP or IDP. EDP is for products prepared and certified by the astronomical community, IDP is for products generated and certified by ESO. meta.ref char indexed pol_states A list of the polarisation states present in the data set. It is serialised as a concatenated list of the possible values: {I Q U V RR LL RL LR XX YY XY YX POLI POLA} where the list separator is a slash /. Leading and trailing slashes must always be present; example: /YY/. meta.code;phys.polarization obscore:Char.PolarizationAxis.stateList char principal pol_xel Number of polarisation states available in the data set. meta.number obscore:Char.PolarizationAxis.numBins long principal preview_html The web (html) rendering of the preview, both for ALMA and LPO data. (The datalink offered by the access_url does not support ALMA data) meta.ref.url;meta.preview char indexed proposal_id The identifier(s) of the observing programme(s) this data set originates from. meta.id;obs.proposal obscore:Provenance.Proposal.identifier char indexed publication_date ESO-specific field not present in the standard ObsCore. The publication date is the time when the product has been made available to the user community (whether under proprietary period or not). time.publiYear char indexed release_description ESO-specific field. It provides the link to the PDF document describing the release content, the originating observations, the calibration and data reduction procedures, the data quality, the data format, and the scientific context of the programme meta.ref.url char s_dec Equatorial coordinate: Declination (FK5/J2000); Image/tile/cube centre, barycentre of image arrays in MEF format ; spectroscopic target position; centre of the survey field in case of catalogues. Ref. DEC keyword in ESO SDP standard. deg pos.eq.dec obscore:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2 double indexed principal s_fov Angular size of the spatial field of view the photons were collected from. deg phys.angSize;instr.fov obscore:Char.SpatialAxis.Coverage.Bounds.Extent.diameter double indexed principal s_pixel_scale Spatial pixel scale arcsec phys.angSize;instr.pixel obscore:Char.SpatialAxis.Sampling.RefVal.SamplingPeriod double indexed principal s_ra Equatorial coordinate: Right Ascension (FK5/J2000); Image/tile/cube centre, barycentre of image arrays in MEF format ; spectroscopic target position; centre of the survey field in case of catalogues. Ref. RA keyword in ESO SDP standard. deg pos.eq.ra obscore:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1 double indexed principal s_region The spatial footprint of the data set. For an ESO spectrum, the returned footprint is the position (s_ra,s_dec). pos.outline;obs.field obscore:Char.SpatialAxis.Coverage.Support.Area char indexed principal s_resolution The characteristic spatial resolution of the data set; ref. ESO SDP standard: PSF_FWHM for images, SKY_RES for 3d cubes, assumed to be the APERTURE for spectral data. arcsec pos.angResolution obscore:Char.SpatialAxis.Resolution.Refval.value double indexed principal s_xel1 Number of elements (e.g. pixels) along the first spatial axis. meta.number obscore:Char.SpatialAxis.numBins1 long principal s_xel2 Number of elements (e.g. pixels) along the second spatial axis. meta.number obscore:Char.SpatialAxis.numBins2 long principal snr ESO-specific field not present in the standard ObsCore. The average signal-to-noise ratio of a spectrum. Not applicable to other data product types. stat.snr double indexed strehl Strehl ratio: Ratio of the intensity at the peak of the light distribution of an on-axis point source to the intensity assuming an ideal optical system limited only by diffraction over the aperture. It should be a value between 0 and 1 instr.param double indexed principal t_exptime Total integration time per pixel (in seconds); ref. EXPTIME keyword in ESO SDP standard. s time.duration;obs.exposure obscore:Char.TimeAxis.Coverage.Support.Extent double indexed principal t_max Stop time in MJD; ref. MJD-END keyword in ESO SDP standard. d time.end;obs.exposure obscore:Char.TimeAxis.Coverage.Bounds.Limits.StopTime double indexed principal t_min Start time in MJD; ref MJD-OBS keyword in ESO SDP standard. d time.start;obs.exposure obscore:Char.TimeAxis.Coverage.Bounds.Limits.StartTime double indexed principal t_resolution Temporal resolution (FWHM) in seconds; currently defined as := (t_max-t_min)*86400. s time.resolution obscore:Char.TimeAxis.Resolution.Refval.value double indexed principal t_xel Number of elements along the time axis (currently set to 1 for all observations). meta.number obscore:Char.TimeAxis.numBins long principal target_name The target name as assigned by the Principal Investigator; ref. Ref. OBJECT keyword in ESO SDP standard. For spectroscopic public surveys, the value shall be set to the survey source identifier, which shall be unique within the survey meta.id;src obscore:Target.name char indexed principal

phase3v2 Collection of administrative tables for the science-ready data: provenance and files information. phase3v2.filesAdministrative table containing all phase 3 product files. (cfr phase3v2..provenance). access_estsize ESO file size (in bytes). long principal archive_id ESO archive unique id. char principal category Phase 3 category (PRODCATG FITS keyword, e.g.: SCIENCE.IMAGE, etc.). char principal checksum ESO file checksum. char principal file_id ESO file id. meta.id;meta.file long principal name ESO file name. char principal

phase3v2.product_filesTable that, for any Phase 3 data product, lists its file components: one science file and 0 or more ancillary files. The table does not cover products that are obsolete or deprecated. For each file, its category, estimated size, file extension, original file name, and the access point are provided. It can be joined with the ivoa.ObsCore table by matching the product_id with obscore.dp_id. It can be used, for example, to find all the ancillary files of a certain category for a given instrument. access_estsize Estimated size of the downloaded file in KBytes. It is only "estimated" as in general, FITS headers can be patched at download time, making the file size varying with time. kbyte phys.size;meta.file long principal access_url The download link of the individual archive_id file. meta.ref.url obscore:Access.reference char principal archive_id ESO identifier of a file belonging to the product: either a science file (eso_category: "SCIENCE.*") or an ancillary file (eso_category: "ANCILLARY.*"). If a science file, its id is the same as the id of the product (product_id=archive_id). Ancillary files are not listed in the ivoa.ObsCore table. meta.id;meta.file;meta.main char indexed principal eso_category ESO file category; It starts with "SCIENCE." or "ANCILLARY." followed by one or more dot-separated and uppercased tokens describing the file at hand. For the full list of categories, please refer to the ESO Science Data Product standard available at: https://www.eso.org/sci/observing/phase3.html meta.code.class;meta.file char principal extension File name extension (upper case) of the product file, e.g.: FITS, PNG, TAR, FZ, etc. meta.id.part;meta.file char indexed principal internal_file_id Internal file identification number, useful in combination with the provenance table. meta.id;meta.file long principal original_filename Original name of the product file before ingestion in the ESO archive. It may provide useful hints on the file content (usually described in the release description of the product, available at: https://archive.eso.org/wdb/wdb/adp/phase3_main/query?dp_id=here_the_product_id). It is not an identifier, as in general, there could be multiple files with the same original_filename but different archive_ids. meta.id char indexed principal product_id ESO identifier of a published phase 3 product. A product is composed of a science file, and optionally of a number of ancillary files. Same as the dp_id field in ivoa.ObCore. meta.id;meta.dataset;meta.main char indexed principal ivoa.ObsCore product_id dp_id

phase3v2.provenanceTable with the provenance information: (source_file, product_file), where source_file is the ESO archive id of the progenitor of the file identified by the number product_file. (cfr phase3v2..files). product_file File number of a file originating by the provided progenitor. int principal source_file ESO archive id of the progenitor. char principal

TAP_SCHEMA a special schema to describe a TAP tableset TAP_SCHEMA.columnsdescription of columns in this tableset "size" lists the size of variable-length columns in the tableset int principal arraysize the length of fixed and variable length datatypes using the VOTable array shape syntax. For example, a database column of type varchar(256) would be described with datatype "char" and arraysize "256*". char principal column_index The column_index is used to recommend column ordering for clients. Clients may order by column_index (ascending) so lower index columns would appear earlier in a listing. int principal column_name the column name char principal datatype lists the ADQL datatype of columns in the tableset char principal description describes the columns in the tableset char principal indexed an indexed column int principal principal a principal column int principal std is it a standard column (1 or 0) int principal table_name the table this column belongs to char principal ucd lists the UCDs of columns in the tableset char principal unit lists the unit used for column values in the tableset char principal utype lists the utypes of columns in the tableset char principal xtype The xtype attribute expands the basic datatype primitives. Please refer to the IVOA standard VOTable v1.4 to know more. char principal TAP_SCHEMA.tables table_name table_name

TAP_SCHEMA.key_columnsdescription of foreign key columns in this tableset from_column column in the from_table char principal key_id key to join to keys char principal target_column column in the target_table char principal TAP_SCHEMA.keys key_id key_id

TAP_SCHEMA.keysdescription of foreign keys in this tableset description describes keys in the tableset char principal from_table the table with the foreign key char principal key_id unique key to join to key_columns char principal target_table the table with the primary key char principal utype lists the utype of keys in the tableset char principal TAP_SCHEMA.tables from_table table_name TAP_SCHEMA.tables target_table table_name

TAP_SCHEMA.schemasdescription of schemas in this tableset description describes schemas in the tableset char principal schema_index The schema_index is used to recommend schema ordering for clients. Clients may order by table_index (ascending) so lower index tables would appear earlier in a listing. int principal schema_name Name of the database schema char principal utype lists the utypes of schemas in the tableset char principal

TAP_SCHEMA.tablesdescription of tables in this tableset description describes tables in the tableset char principal schema_name the schema this table belongs to char principal table_index The table_index is used to recommend table ordering for clients. Clients may order by table_index (ascending) so lower index tables would appear earlier in a listing. int principal table_name the fully qualified table name char principal table_type one of: table view char principal utype lists the utype of tables in the tableset char principal TAP_SCHEMA.schemas schema_name schema_name

util Collection of generic utility tables. util.collectionsTable that lists the data collections of the processed data, provided either by ESO observers or generated in-house, available in the ESO Science Archive Facility. creators The names of the creator(s) of the data collection. meta.id char principal doi The (dereferenceable) Digital Object Identifier assigned to the collection. The URL will bring you to the DOI landing page containing abstract, data curators, etc., including a link that can be used to download the entire data collection. meta.ref.doi char principal name Name of the data collection. meta.id char principal title The title of the collection, typically describing its science case. meta.title char principal type Type of observing programme(s) from which the collection was generated, e.g. survey, large programme, normal programme, etc. The special value of STREAM indicates a collection of automatically generated pipeline products, spanning all observing programmes containing data from a specific instrument mode. meta.code.class char principal

util.docurlTable that lists the urls of the web pages documenting various assets related to the ESO Science Archive Facility (for example, the fors2 instrument). name Name of the asset (e.g., instrument name) meta.id char principal type Type of the asset (e.g., instrument) meta.code.class char principal url URL pointing to the documentation web page of the asset. meta.ref.url char principal