ivo://wfau.roe.ac.uk/pssa-dsa WFAU, Institute for Astronomy, University of Edinburgh WFAU, Institute for Astronomy, University of Edinburgh http://wfaudata.roe.ac.uk/wfau.gif 2010-02-15 Version 1 Mark Holliman msh@roe.ac.uk Digitised photographic Schmidt field test photometry astrometry Small subset of the SuperCOSMOS Science Archive, useful for testing queries. The SuperCOSMOS data held in the SSA primarily originate from scans of Palomar and UK Schmidt blue, red and near-IR southern sky surveys. The ESO Schmidt R (dec < -17.5) and Palomar POSS-I E (dec > -17.5) surveys have also been scanned and provide a 1st epoch red measurement. Further details on the surveys, the scanning process and the raw parameters extracted can be found on the further information link. The SSA is housed in a relational database running on Microsoft SQL Server 2000. Data are stored in tables which are inter-linked via reference ID numbers. In addition to the astronomical object catalogues these tables also contain information on the plates that were scanned, survey field centres and calibration coefficients. Most user science queries will only need to access the SOURCE table or to a lesser extent the DETECTION table. http://thoth.roe.ac.uk/ssa/ Catalog Research service-for ivo://wfau.roe.ac.uk/pssa-dsa/ceaApplication Detection table: cone search of detections from all plate measurements in all bands http://wfaudata.roe.ac.uk/pssa-dsa/DirectCone?DSACAT=SSA&DSATAB=Detection& 1.500000 2000000 false 184.0 -1.24 0.01 Source table: cone search of single band merged source catalog http://wfaudata.roe.ac.uk/pssa-dsa/DirectCone?DSACAT=SSA&DSATAB=Source& 1.500000 2000000 false 184.0 -1.24 0.01 http://wfaudata.roe.ac.uk/pssa-dsa/VOSI/capabilities GET application/xml http://wfaudata.roe.ac.uk/pssa-dsa/VOSI/capabilities GET application/xml http://wfaudata.roe.ac.uk/pssa-dsa/VOSI/availability GET application/xml http://wfaudata.roe.ac.uk/pssa-dsa/VOSI/availability GET application/xml http://wfaudata.roe.ac.uk/pssa-dsa/VOSI/tables GET application/xml http://wfaudata.roe.ac.uk/pssa-dsa/delegations GET application/xml SuperCOSMOS Science Archive Test The query response table. Queries to this service will return a VOTable with the structure described here. FieldSystem systemID The system of survey fields used for the survey ID_MAIN int name The name of the system, eg. "ESO/SRC", "POSS-I" etc. NOTE char centrePitch The pitch of the field centres deg OBS_DIFF float Survey surveyID Unique survey identifier in the SSA ID_SURVEY int surveyName Survey name, eg. SERC-J/EJ ID_CATALOG char systemID The system of survey fields used for the survey NOTE int fieldOfView The nominal field of view of each survey plate deg INST_DET_SIZE float decMin Southern (Dec) limit of survey deg POS_EQ_DEC float decMax Northern (Dec) limit of survey deg POS_EQ_DEC float numFields No. of fields in the survey NUMBER int telescope UK, ESO or Palomar Oschin Schmidt TEL_ID char telAperture Telescope aperture metres TEL_SIZE float telLong Telescope longitude deg POS_EARTH_LON_MAIN float telLat Telescope latitude degress POS_EARTH_LAT_MAIN float telHeight Telescope altitude metres OBSTY_ALTITUDE float plateScale Nominal plate scale arcsec/mm INST_SCALE float colour Survey colour, eg. blue, red or near-infrared OBS_BAND char waveMin Approximate minimum wavelength nanometres INST_WAVELENGTH_VALUE int waveMax Approximate maximum wavelength nanometres INST_WAVELENGTH_VALUE int waveEff Approximate effective wavelength nanometres INST_WAVELENGTH_EFFECTIVE int magLimit Nominal mag limit of survey, eg. 22.5 for Bj PHOT_MAG_LIMIT float epochMin Minimum epoch of observations year TIME_EPOCH float epochMax Maximum epoch of observations year TIME_EPOCH float epTsys Time system for epoch values in SurveyCatalog NOTE char equinox Equinox for positions in SurveyCatalog year TIME_EQUINOX float eqTsys Time system for equinox in SurveyCatalog NOTE char surveyRef Literature reference for survey REFER_CODE char Plate plateID Unique identifier of the plate: surveyID plus field number combo ID_PLATE int surveyID Every plate comes from a survey ID_SURVEY int fieldID Unique survey field identifier ID_FIELD int plateNum Plate number assigned by observatory ID_PLATE int dateMeas Measurement date MM-DD-YYYY TIME_DATE char timeMeas Measurement time (local), eg. 15:33:47 TIME_MISC char instrument Name of scanning machine INST_ID char softVersion Software version, eg. /home/scosdev/v033 ID_VERSION char operator Machine operator's username ID_HUMAN char scanMaterial Photographic medium, eg. Original glass, Copy film, Copy glass REMARKS char emulsion Kodak emulsion type, eg. 103a-E, IIIa-J, IV-N INST_PLATE_EMULSION char filterID Filter identifier, eg. OG590, RG715, 2444... INST_FILTER_CODE char filterComm Filter type, eg. "Schott glass", "Red plexiglass"... INST_FILTER_CODE char raPnt Mean plate centre RA deg POS_EQ_RA_MAIN float decPnt Mean plate centre Dec deg POS_EQ_DEC_MAIN float radecSys Co-ordinate system of raPnt/decPnt, eg. FK4 POS_REFERENCE-SYSTEM char equinox Equinox of raPnt and decPnt year TIME_EQUINOX float eqTsys Time system of equinox, eg. BESSELIAN NOTE char utDateObs UT date of observation MM-DD-YYYY TIME_DATE char lstObs Local sidefloat time at start of exposure, eg. 2336 24-hour TIME_MISC char expLength Exposure time minutes TIME_EXPTIME float epoch Epoch of observation years TIME_EPOCH float domeTemp Dome temp at observation Kelvin OBS_CONDITIONS float domePressure Dome pressure at observation mBar OBS_CONDITIONS float domeHumid Dome relative humidity at obsevation time OBS_CONDITIONS float waveEffect Effective wavelength Angstrom INST_WAVELENGTH_EFFECTIVE int tropl Tropospheric lapse rate K/m MODEL_PARAM float mjd Modified Julian Date at mid exposure Julian days TIME_DATE float focusNX No. of scan focus points in X INST_PARAM int focusNY No. of scan focus points in Y INST_PARAM int calType Intensity calibration wedge fit type, eg. SPLINE INST_PARAM char stepWdg Intensity calibration step-wedge type, eg. kpno INST_PARAM char nSteps No. of intensity calibration wedge steps INST_PARAM int orientation SuperCOSMOS plate orientation, eg. news INST_PARAM char emulpos SuperCOSMOS emulsion position, eg. up INST_PARAM char sosp SuperCOSMOS start of scan CCD pixel number INST_PARAM int stepsize SuperCOSMOS nominal pixel size microns INST_PIXSIZE float scanlen SuperCOSMOS CCD lane scan length pixels INST_PARAM int aXmin SuperCOSMOS XMIN of measured area microns POS_PLATE_X float aXmax SuperCOSMOS XMAX of measured area microns POS_PLATE_X float aYmin SuperCOSMOS YMIN of measured area microns POS_PLATE_Y float aYmax SuperCOSMOS YMAX of measured area microns POS_PLATE_Y float xPnt Centre of scan area in X microns POS_PLATE_Y float yPnt Centre of scan area in Y microns POS_PLATE_Y float areaCut Minimum area of detected object pixels NUMBER int apParam Afloat profile parameter REDUCT_PARAM float dbParam Deblending parameter REDUCT_PARAM float dbAmin Minimum area of parent image that can be deblended pixels REDUCT_PARAM int dbAmax Maximum area of parent image that can be deblended pixels REDUCT_PARAM int dbAcut Minimum area of deblended object detection pixels REDUCT_PARAM int dbLevel No. of rethresholding levels for deblending REDUCT_PARAM int skySquare Blocksize (one side) of sky background pixels REDUCT_PARAM int skyDefn Method of defining sky, eg. "median" REDUCT_METHOD char skyFilter Box filter weights for sky determination REDUCT_PARAM char fThresh Sky filtering parameter REDUCT_PARAM int fSclen Scale size for iterative filter application REDUCT_PARAM int pCut Threshold "percentage cut" for pixel analysis percent STAT_%REJECT float starCat Name of reference star catalogue used for astrometric fit ID_CATALOG char brightLim Bright mag limit for selected astrometric refstars PHOT_MAG_LIMIT float faintLim Faint limit for selected refstars PHOT_MAG_LIMIT float equinRef Equinox of refstar positions TIME_EQUINOX float tSysRef Time system of equinox of refstar positions, eg. JULIAN NOTE char maxIter Maximum no. of iterations for non-linear astrometric fit NUMBER int rCritIni Initial matching tolerance for refstars microns REDUCT_PARAM float rCritAbs Absolute object rejection criterion microns REDUCT_PARAM float rCritRel Relative object rejection criterion REDUCT_PARAM float rCritFin Final residual tolerance sigma REDUCT_PARAM float distType Radial distortion term in solution, eg. R/TAN(R) MODEL_CORRECTION char scdGrid Non-linear distortion mask filename ID_FILE char raCol Name of RA column in reference catalogue REMARKS char decCol Name of Dec column in reference catalogue REMARKS char raPMCol Name of RA proper motion column in reference catalogue REMARKS char decPMCol Name of Dec proper motion column in reference catalogue REMARKS char plxCol Name of parallax column in reference catalogue REMARKS char rvCol Name of radial velocity column in reference catalogue REMARKS char magCol Name of magnitude column in reference catalogue REMARKS char cEquinox Catalogue equinox year TIME_EQUINOX float cEqTSys Catalogue equinox time system, eg. JULIAN NOTE char cEpoch Catalogue epoch year TIME_EPOCH float cEpTSys Catalogue epoch time system, eg. JULIAN NOTE char starsInit No. of refstars in initial astrometric solution NUMBER int starsSelec No. of refstars initially selected NUMBER int starsUsed No. of refstars in final astrometric solution NUMBER int coeffs1 1st coefficient of astrometric fit for XY to obs. xi,eta FIT_PARAM_VALUE float coeffs2 2nd coefficient of astrometric fit for XY to obs. xi,eta FIT_PARAM_VALUE float coeffs3 3rd coefficient of astrometric fit for XY to obs. xi,eta FIT_PARAM_VALUE float coeffs4 4th coefficient of astrometric fit for XY to obs. xi,eta FIT_PARAM_VALUE float coeffs5 5th coefficient of astrometric fit for XY to obs. xi,eta FIT_PARAM_VALUE float coeffs6 6th coefficient of astrometric fit for XY to obs. xi,eta FIT_PARAM_VALUE float cubicDist Cubic coefficient of radial distortion FIT_PARAM_VALUE float obsRaPnt Observed plate centre RA rad POS_EQ_RA_MAIN float obsDecPnt Observed plate centre Dec rad POS_EQ_DEC_MAIN float shiftPnt Shift of from nominal to fitted plate centre rad POS_OFFSET float areaMin Minimum object area in IAM file pixels EXTENSION_AREA int areaMax Maximum object area in IAM file pixels EXTENSION_AREA int magMin Minimum instrumental mag in IAM file PHOT_MAG_LIMIT float magMax Maximum instrumental mag in IAM file PHOT_MAG_LIMIT float ellipMin Minimum object ellipticity in IAM file PHYS_ELLIPTICITY float ellipMax Maximum object ellipticity in IAM file PHYS_ELLIPTICITY float ellipMode Modal object ellipticity in IAM file PHYS_ELLIPTICITY float orientMode Modal orientation in IAM file deg POS_POS-ANG float ellipMed Median ellipticity in IAM file PHYS_ELLIPTICITY float orientMed Median orientation in IAM file deg POS_POS-ANG float ellipMean Mean object ellipticity in IAM file PHYS_ELLIPTICITY float orientMean Mean orientation in IAM file deg POS_POS-ANG float objNum No. of objects detected on plate NUMBER int nParents No. of parent objects detected on plate NUMBER int lane1Count No. of objects in lane 1 of plate scan NUMBER int lane2Count No. of objects in lane 2 of plate scan NUMBER int lane3Count No. of objects in lane 3 of plate scan NUMBER int lane4Count No. of objects in lane 4 of plate scan NUMBER int lane5Count No. of objects in lane 5 of plate scan NUMBER int lane6Count No. of objects in lane 6 of plate scan NUMBER int lane7Count No. of objects in lane 7 of plate scan NUMBER int lane8Count No. of objects in lane 8 of plate scan NUMBER int lane9Count No. of objects in lane 9 of plate scan NUMBER int lane10Count No. of objects in lane 10 of plate scan NUMBER int lane11Count No. of objects in lane 11 of plate scan NUMBER int lane12Count No. of objects in lane 12 of plate scan NUMBER int lane13Count No. of objects in lane 13 of plate scan NUMBER int lane14Count No. of objects in lane 14 of plate scan NUMBER int lane15Count No. of objects in lane 15 of plate scan NUMBER int lane16Count No. of objects in lane 16 of plate scan NUMBER int lane17Count No. of objects in lane 17 of plate scan NUMBER int lane18Count No. of objects in lane 18 of plate scan NUMBER int lane19Count No. of objects in lane 19 of plate scan NUMBER int lane20Count No. of objects in lane 20 of plate scan NUMBER int lane21Count No. of objects in lane 21 of plate scan NUMBER int lane22Count No. of objects in lane 22 of plate scan NUMBER int lane23Count No. of objects in lane 23 of plate scan NUMBER int lane24Count No. of objects in lane 24 of plate scan NUMBER int lane25Count No. of objects in lane 25 of plate scan NUMBER int lane26Count No. of objects in lane 26 of plate scan NUMBER int lane27Count No. of objects in lane 27 of plate scan NUMBER int lane28Count No. of objects in lane 28 of plate scan NUMBER int lane29Count No. of objects in lane 29 of plate scan NUMBER int lane30Count No. of objects in lane 30 of plate scan NUMBER int astResidX Residual of astrometric fit in X arcsec FIT_RESIDUAL float astResidY Residual of astrometric fit in Y arcsec FIT_RESIDUAL float nCalCoeffs No. of photometric calibration coefficients FIT_PARAM_VALUE int CalXK Stationary point in profile cal. curve inst. profile mag FIT_PARAM_VALUE float gradient Gradient of linear portion of profile cal. curve FIT_PARAM_VALUE float getCal1 1st profile calibration polynomial coefficient FIT_PARAM_VALUE float getCal2 2nd profile calibration polynomial coefficient FIT_PARAM_VALUE float getCal3 3rd profile calibration polynomial coefficient FIT_PARAM_VALUE float getCal4 4th profile calibration polynomial coefficient FIT_PARAM_VALUE float getCal5 5th profile calibration polynomial coefficient FIT_PARAM_VALUE float getCal6 6th profile calibration polynomial coefficient FIT_PARAM_VALUE float ffZp Field-to-field zeropoint mag PHOT_ZPT float galZp Zeropoint of galaxy instrumental scale mag PHOT_ZPT float galGrad Gradient of galaxy instrumental mag scale mags per instrumental mag FIT_PARAM_VALUE float directory Name of directory in flat-file system of source data. ID_FILE char Detection objID Unique object identification number ID_MAIN char surveyID The survey that collected the data ID_SURVEY int plateID Plate ID of the plate that this detection came from ID_PLATE int parentID objID of parent object, = objID for parent/undeblended (ie. not child) object ID_PARENT int sourceID objID for corresponding merged record in Source ID_ASSOCIATED int recNum The record number in the original IAM file RECORD int ra Celestial Right Ascension deg POS_EQ_RA_MAIN double dec Celestial Declination deg POS_EQ_DEC_MAIN double htmId Hierarchical Triangular Mesh (20-deep) of centroid POS_GENERAL int cx Cartesian x of unit (ra,dec) vector on celestial sphere POS_EQ_X float cy Cartesian y of unit (ra,dec) vector on celestial sphere POS_EQ_Y float cz Cartesian z of unit (ra,dec) vector on celestial sphere POS_EQ_Z float xmin Leftmost extent of image on plate microns POS_PLATE_X float xmax Rightmost extent of image on plate microns POS_PLATE_X float ymin Bottommost extent of image on plate microns POS_PLATE_Y float ymax Topmost extent of image on plate microns POS_PLATE_Y float area Area within detection isophote pixels EXTENSION_AREA int ipeak Intensity of brightest pixel above sky instrumental units PHOT_INTENSITY_MISC float cosmag Isophotal magnitude instrumental units PHOT_PHG_MAG float isky Estimate of sky intensity at (xCen, yCen) PHOT_SB_SKY float xCen Intensity-weighted X-centroid of image microns POS_PLATE_X float yCen Intensity-weighted Y-centroid of image microns POS_PLATE_Y float aU Semi-major axis of unweighted fitted ellipse microns EXTENSION_RAD float bU Semi-minor axis of unweighted fitted ellipse microns EXTENSION_SMIN float thetaU Position angle (wrt x-axis) of unweighted fitted ellipse deg POS_POS-ANG int aI Semi-major axis of intensity-weighted fitted ellip. microns EXTENSION_RAD float bI Semi-minor axis of intensity-weighted fitted ellip. microns EXTENSION_SMIN float thetaI Position angle (wrt x-axis) of intensity-weighted fitted ellipse deg POS_POS-ANG int class Classification flag CLASS_OBJECT int pa Celestial position angle (E of N) deg POS_POS-ANG int ap1 Area above 1st afloat profile threshold pixels EXTENSION_AREA int ap2 Area above 2nd afloat profile threshold pixels EXTENSION_AREA int ap3 Area above 3rd afloat profile threshold pixels EXTENSION_AREA int ap4 Area above 4th afloat profile threshold pixels EXTENSION_AREA int ap5 Area above 5th afloat profile threshold pixels EXTENSION_AREA int ap6 Area above 6th afloat profile threshold pixels EXTENSION_AREA int ap7 Area above 7th afloat profile threshold pixels EXTENSION_AREA int ap8 Area above 8th afloat profile threshold pixels EXTENSION_AREA int blend Deblend flag: -n=parent of n children; +n = nth child of a parent CODE_MULT_INDEX int quality Bitwise quality flag CODE_QUALITY int prfStat Profile statistic N(0,1) CLASS_STAR_GALAXY float prfMag Profile magnitude instrumental units PHOT_PHG_MAG float gMag Magnitude calculated on assumption object is galaxy mag MODEL_MAG_VALUE float sMag Magnitude calculated on assumption object is star mag MODEL_MAG_VALUE float SSAfield SSS field number (ESO/SRC system) that this detection falls in. ID_FIELD int seam Seam index: = zero or SSAfield for seamless selection ID_FIELD int JunkDetection objID Unique object identification number from Detection ID_MAIN int junkSource Source of junk: 1=satellite track; 2=diffraction spike; 3=bright stellar halo CLASS_CODE int invSGDens Local inverse star/galaxy density PHYS_DENSITY_SURFACE int trackAngle Angle of track or diffraction spike deg POS_POS-ANG float brightObjID The Detection.objID of the artifact-inducing bright star ID_ASSOCIATED int haloRadius Vertical half-major axis of halo ellipse arcsec EXTENSION_RAD float postProb Posterior probability of detection being junk STAT_PROBABILITY float Neighbours objID Unique identifier of merged source ID_MAIN char neighbourObjID Unique identifier of merged source near neighbour ID_CATALOG char distanceMins The angular separation of the cross-neighbour arcminutes POS_ANG_DIST_GENERAL float ReliableGalaxies objID Unique identifier of merged source ID_MAIN char objIDB objID for B band detection merged into this object ID_ASSOCIATED int objIDR1 objID for R1 band detection merged into this object ID_ASSOCIATED int objIDR2 objID for R2 band detection merged into this object ID_ASSOCIATED int objIDI objID for I band detection merged into this object ID_ASSOCIATED int htmId Hierarchical Triangular Mesh (20-deep) of centroid POS_GENERAL int epoch Epoch of position (variance weighted mean epoch of available measures) year TIME_EPOCH float ra Mean RA, computed from detections merged in this catalogue deg POS_EQ_RA_MAIN float dec Mean Dec, computed from detections merged in this catalogue deg POS_EQ_DEC_MAIN float sigRA Uncertainty in RA (formal random error not inc. systematic errors) deg ERROR float sigDec Uncertainty in Dec (formal random error not inc. systematic errors) deg ERROR float cx Cartesian x of unit (ra,dec) vector on celestial sphere POS_EQ_X float cy Cartesian y of unit (ra,dec) vector on celestial sphere POS_EQ_Y float cz Cartesian z of unit (ra,dec) vector on celestial sphere POS_EQ_Z float muAcosD Proper motion in RA direction mas/yr POS_EQ_PMRA float muD Proper motion in Dec direction mas/yr POS_EQ_PMDEC float sigMuAcosD Error on proper motion in RA direction mas/yr ERROR float sigMuD Error on proper motion in Dec direction mas/yr ERROR float chi2 Chi-squared value of proper motion solution FIT_CHI2 float Nplates No. of plates used for this proper motion measurement NUMBER int classMagB B band magnitude selected by B image class mag PHOT_PHG_BJ float classMagR1 R1 band magnitude selected by R1 image class mag PHOT_PHG_R float classMagR2 R2 band magnitude selected by R2 image class mag PHOT_PHG_R float classMagI I band magnitude selected by I image class mag PHOT_PHG_I float gCorMagB B band magnitude assuming object is galaxy mag PHOT_PHG_BJ float gCorMagR1 R1 band magnitude assuming object is galaxy mag PHOT_PHG_R float gCorMagR2 R2 band magnitude assuming object is galaxy mag PHOT_PHG_R float gCorMagI I band magnitude assuming object is galaxy mag PHOT_PHG_I float sCorMagB B band magnitude assuming object is star mag PHOT_PHG_BJ float sCorMagR1 R1 band magnitude assuming object is star mag PHOT_PHG_R float sCorMagR2 R2 band magnitude assuming object is star mag PHOT_PHG_R float sCorMagI I band magnitude assuming object is star mag PHOT_PHG_I float meanClass Estimate of image class based on unit-weighted mean of individual classes CLASS_OBJECT int classB Image classification from B band detection CLASS_OBJECT int classR1 Image classification from R1 band detection CLASS_OBJECT int classR2 Image classification from R2 band detection CLASS_OBJECT int classI Image classification from I band detection CLASS_OBJECT int ellipB Ellipticity of B band detection PHYS_ELLIPTICITY float ellipR1 Ellipticity of R1 band detection PHYS_ELLIPTICITY float ellipR2 Ellipticity of R2 band detection PHYS_ELLIPTICITY float ellipI Ellipticity of I band detection PHYS_ELLIPTICITY float qualB Bitwise quality flag from B band detection CODE_QUALITY int qualR1 Bitwise quality flag from R1 band detection CODE_QUALITY int qualR2 Bitwise quality flag from R2 band detection CODE_QUALITY int qualI Bitwise quality flag from I band detection CODE_QUALITY int blendB Blend flag from B band detection CODE_MULT_INDEX int blendR1 Blend flag from R1 band detection CODE_MULT_INDEX int blendR2 Blend flag from R2 band detection CODE_MULT_INDEX int blendI Blend flag from I band detection CODE_MULT_INDEX int prfStatB Profile statistic from B band detection N(0,1) CLASS_STAR_GALAXY float prfStatR1 Profile statistic from R1 band detection N(0,1) CLASS_STAR_GALAXY float prfStatR2 Profile statistic from R2 band detection N(0,1) CLASS_STAR_GALAXY float prfStatI Profile statistic from I band detection N(0,1) CLASS_STAR_GALAXY float l The Galactic longitude of the source deg POS_GAL_LON float b The Galactic latitude of the source deg POS_GAL_LAT float d The great-circle distance of the source from the Galactic centre deg POS_ANG_DIST_REL float Ebmv The estimated foreground reddening at this position from Schlegel et al. (1998) mag PHOT_EXTINCTION_GAL float Source objID Unique identifier of merged source ID_MAIN char objIDB objID for B band detection merged into this object ID_ASSOCIATED int objIDR1 objID for R1 band detection merged into this object ID_ASSOCIATED int objIDR2 objID for R2 band detection merged into this object ID_ASSOCIATED int objIDI objID for I band detection merged into this object ID_ASSOCIATED int htmId Hierarchical Triangular Mesh (20-deep) of centroid POS_GENERAL int epoch Epoch of position (variance weighted mean epoch of available measures) year TIME_EPOCH float ra Mean RA, computed from detections merged in this catalogue deg POS_EQ_RA_MAIN double dec Mean Dec, computed from detections merged in this catalogue deg POS_EQ_DEC_MAIN double sigRA Uncertainty in RA (formal random error not inc. systematic errors) deg ERROR float sigDec Uncertainty in Dec (formal random error not inc. systematic errors) deg ERROR float cx Cartesian x of unit (ra,dec) vector on celestial sphere POS_EQ_X float cy Cartesian y of unit (ra,dec) vector on celestial sphere POS_EQ_Y float cz Cartesian z of unit (ra,dec) vector on celestial sphere POS_EQ_Z float muAcosD Proper motion in RA direction mas/yr POS_EQ_PMRA float muD Proper motion in Dec direction mas/yr POS_EQ_PMDEC float sigMuAcosD Error on proper motion in RA direction mas/yr ERROR float sigMuD Error on proper motion in Dec direction mas/yr ERROR float chi2 Chi-squared value of proper motion solution FIT_CHI2 float Nplates No. of plates used for this proper motion measurement NUMBER int classMagB B band magnitude selected by B image class mag PHOT_PHG_BJ float classMagR1 R1 band magnitude selected by R1 image class mag PHOT_PHG_R float classMagR2 R2 band magnitude selected by R2 image class mag PHOT_PHG_R float classMagI I band magnitude selected by I image class mag PHOT_PHG_I float gCorMagB B band magnitude assuming object is galaxy mag PHOT_PHG_BJ float gCorMagR1 R1 band magnitude assuming object is galaxy mag PHOT_PHG_R float gCorMagR2 R2 band magnitude assuming object is galaxy mag PHOT_PHG_R float gCorMagI I band magnitude assuming object is galaxy mag PHOT_PHG_I float sCorMagB B band magnitude assuming object is star mag PHOT_PHG_BJ float sCorMagR1 R1 band magnitude assuming object is star mag PHOT_PHG_R float sCorMagR2 R2 band magnitude assuming object is star mag PHOT_PHG_R float sCorMagI I band magnitude assuming object is star mag PHOT_PHG_I float meanClass Estimate of image class based on unit-weighted mean of individual classes CLASS_OBJECT int classB Image classification from B band detection CLASS_OBJECT int classR1 Image classification from R1 band detection CLASS_OBJECT int classR2 Image classification from R2 band detection CLASS_OBJECT int classI Image classification from I band detection CLASS_OBJECT int ellipB Ellipticity of B band detection PHYS_ELLIPTICITY float ellipR1 Ellipticity of R1 band detection PHYS_ELLIPTICITY float ellipR2 Ellipticity of R2 band detection PHYS_ELLIPTICITY float ellipI Ellipticity of I band detection PHYS_ELLIPTICITY float qualB Bitwise quality flag from B band detection CODE_QUALITY int qualR1 Bitwise quality flag from R1 band detection CODE_QUALITY int qualR2 Bitwise quality flag from R2 band detection CODE_QUALITY int qualI Bitwise quality flag from I band detection CODE_QUALITY int blendB Blend flag from B band detection CODE_MULT_INDEX int blendR1 Blend flag from R1 band detection CODE_MULT_INDEX int blendR2 Blend flag from R2 band detection CODE_MULT_INDEX int blendI Blend flag from I band detection CODE_MULT_INDEX int prfStatB Profile statistic from B band detection N(0,1) CLASS_STAR_GALAXY float prfStatR1 Profile statistic from R1 band detection N(0,1) CLASS_STAR_GALAXY float prfStatR2 Profile statistic from R2 band detection N(0,1) CLASS_STAR_GALAXY float prfStatI Profile statistic from I band detection N(0,1) CLASS_STAR_GALAXY float l The Galactic longitude of the source deg POS_GAL_LON float b The Galactic latitude of the source deg POS_GAL_LAT float d The great-circle distance of the source from the Galactic centre deg POS_ANG_DIST_REL float Ebmv The estimated foreground reddening at this position from Schlegel et al. (1998) mag PHOT_EXTINCTION_GAL float Field systemID Unique identifier of the system of survey field centres ID_MAIN int fieldID Unique identifier of survey field (fieldNum and systemID combo) ID_FIELD int fieldNum ESO/SRC or Palomar survey system field number ID_FIELD int nominalRA Nominal field centre RA deg POS_EQ_RA_MAIN float nominalDec Nominal field centre Dec deg POS_EQ_DEC_MAIN float htmId Hierarchical Triangular Mesh (20-deep) of nominal field centre POS_GENERAL int cx Cartesian x of unit (ra,dec) vector on celestial sphere POS_EQ_X float cy Cartesian y of unit (ra,dec) vector on celestial sphere POS_EQ_Y float cz Cartesian z of unit (ra,dec) vector on celestial sphere POS_EQ_Z float IsoCalVersion versionID Unique identifier for the calibration version ID_VERSION int startDate Start date at which the calibration was released MM-DD-YYYY TIME_DATE char endDate End date at which the calibration was superseded MM-DD-YYYY TIME_DATE char description Short description of the calibration version REMARKS char PrevIsoCal versionID Unique identifier for the calibration version ID_MAIN int plateID Unique identifier of the plate ID_PLATE int gradient Gradient of the isophotal scale mags per instrumental mag MODEL_PARAM float zeropoint Zeropoint of the isophotal scale mags PHOT_ZP float slump Fourth-order radial term in calibration mags per (2.5 deg)^4 MODEL_PARAM float colourZP Colour zeropoint (wrt Bj) of calibration mags MODEL_PARAM float CurrIsoCal plateID Unique identifier of the plate ID_PLATE int gradient Gradient of the isophotal scale mags per instrumental mag MODEL_PARAM float zeropoint Zeropoint of the isophotal scale mags PHOT_ZP float slump Fourth-order radial term in calibration mags per (2.5 deg)^4 MODEL_PARAM float colourZP Colour zeropoint (wrt Bj) of calibration mags MODEL_PARAM float CrossNeighboursEDR ssaID The object identifier from the SSA Source table ID_MAIN int sdssID The object identifier from SkyServer.PhotoObj ID_CATALOG int distanceMins The angular separation of the cross-neighbour arcminutes POS_ANG_DIST_GENERAL float sdssType The SDSS image classification flag CLASS_OBJECT int sdssPrimary CODE_MISC int CrossNeighbours2MASSXSC ssaID The object identifier from the SSA Source table ID_MAIN int xscID The object identifier (ext_key) from TWOMASS.twomass_xsc ID_CATALOG int distanceMins The angular separation of the cross-neighbour arcminutes POS_ANG_DIST_GENERAL float CrossNeighboursDR1 ssaID The object identifier from the SSA Source table ID_MAIN int sdssID The object identifier from BestDR1.PhotoObj ID_CATALOG int distanceMins The angular separation of the cross-neighbour arcminutes POS_ANG_DIST_GENERAL float sdssType The SDSS image classification flag CLASS_OBJECT int sdssPrimary CODE_MISC int CrossNeighbours2MASSPSC ssaID The object identifier from the SSA Source table ID_MAIN int pscID The object identifier (pts_key) from TWOMASS.twomass_psc ID_CATALOG int distanceMins The angular separation of the cross-neighbour arcminutes POS_ANG_DIST_GENERAL float CrossNeighboursUSNOB ssaID The object identifier from the SSA Source table ID_MAIN int zone The zone file number of the USNOB source. ID_CATALOG int seqNo The sequence number within the zone file of the USNOB source ID_CATALOG int distanceMins The angular separation of the cross-neighbour arcminutes POS_ANG_DIST_GENERAL float