HSTPAEC ivo://nasa.heasarc/hstpaec NASA/GSFC HEASARC STScI 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Observation This is the HST Planned and Archived Exposures Catalog (PAEC) as obtained from the Space Telescope Science Institute (STScI) Archive which created the original compilation from their Archive and Proposal databases. This database table provides a summary of all approved HST observations, including already completed observations and those which are planned to be executed as part of the current cycle or are reserved for execution by Guaranteed Time Observer (GTO) programs for the upcoming cycles. This database table provides a summary of both planned and completed HST observations. Much more information can be obtained about each exposure, and the data themselves can be retrieved, using STScI's Multimission Archive (URL is <a href="http://archive.stsci.edu/hst/">http://archive.stsci.edu/hst/</a>) or STScI's Archive Web Interface (URL is <a href="http://archive.stsci.edu/hst/search.php">http://archive.stsci.edu/hst/search.php</a>). Note that a number of solar system and other objects have 0 values for their 2000 equinox RA and declination coordinates in the original HST table and hence also in this HEASARC database. This HEASARC version of the HSTPAEC will be updated on a regular basis, usually within one month of the data files on the STScI Web site (URL <a href="http://archive.stsci.edu/hst/paec.html">http://archive.stsci.edu/hst/paec.html</a>) being updated. This database table is recreated by the HEASARC on a routine basis, usually within one month of the PAEC data files at the STScI Hubble Data Archive (HDA) being modified. This is a service provided by NASA HEASARC . https://heasarc.gsfc.nasa.gov/W3Browse/all/hstpaec.html Archive Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=hstpaec& GET text/xml 180 99999 true 25.793375 -89.29488889 0.25 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=hstpaec GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_hstpaec&Action=More+Options&Action=Parameter+Search&ConeAdd=1 HST 0.25 Optical public hstpaec HST Planned and Archived Observations name Target Designation (truncated to 16 characters) meta.id;src char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable cycle Proposal Cycle for the Observation obs.proposal.cycle short nullable proposal_id HST Proposal Identifier meta.number;obs.proposal char nullable exposure_time Length of Exposure (seconds) s time.duration;obs.exposure int nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable proposal_exposure_id Proposal Exposure Number meta.number;obs.exposure short nullable spectral_element Spectral Elements Used char nullable release_date Date Observation Became/Becomes Public mjd time.release int nullable configuration Instrument Configuration instr.param char nullable aperture Aperture Used instr.param char nullable mode Instrument Operating Mode instr.param char nullable dataset_name Dataset Name for Completed Observation meta.id;meta.main char nullable bii Galactic Latitude degree pos.galactic.lat double nullable lii Galactic Longitude degree pos.galactic.lon double nullable c_flag Corrective Optics Flag char nullable wavelength "Central" Wavelength (Angstroms) Angstrom int nullable