TAP_SCHEMATAP schemaTAP_SCHEMA.schemasList of schemasschema_nameFully qualified schema nameVARCHARdescriptionBrief description of schemaVARCHARutypeUTYPE if schema corresponds to a data modelVARCHARidFor internal purposesINTEGERTAP_SCHEMA.tablesList of tablesschema_nameFully qualified schema nameVARCHARtable_nameFully qualified table nameVARCHARtable_typeOne of: table or viewVARCHARdescriptionBrief description of tableVARCHARutypeUTYPE if table corresponds to a data modelVARCHARidFor internal purposesINTEGERTAP_SCHEMA.schemasschema_nameschema_nameTAP_SCHEMA.columnsList of columnstable_nameFully qualified table nameVARCHARcolumn_nameColumn nameVARCHARdescriptionBrief description of columnVARCHARunitUnit in VO std formatVARCHARucdUCD of column if anyVARCHARutypeUtypeVARCHARdatatypeADQL datatype as in section 2.5VARCHAR"size"Length of variable length datatypesINTEGERprincipalA principal column (1 true, 0 false)INTEGERindexedAn indexed column (1 true, 0 false)INTEGERstdA std column (1 true, 0 false)INTEGERidFor internal purposesINTEGERxtypeExtended ADQL data typeVARCHARTAP_SCHEMA.tablestable_nametable_nameTAP_SCHEMA.keysList of keyskey_idUnique key descriptorVARCHARfrom_tableFully qualified table nameVARCHARtarget_tableFully qualified table nameVARCHARdescriptionDescription of this keyVARCHARutypeUtype of this keyVARCHARidFor internal purposesINTEGERTAP_SCHEMA.tablesfrom_tabletable_nametarget_tabletable_nameTAP_SCHEMA.key_columnsList of key columnskey_idKey identifier from keys tableVARCHARfrom_columnKey column name in the from_tableVARCHARtarget_columnKey column name in the target_tableVARCHARidFor internal purposesINTEGERTAP_SCHEMA.columnsfrom_columncolumn_nametarget_columncolumn_nameTAP_SCHEMA.keyskey_idkey_idivoaInternational Virtual Observatory Allianceivoa.ObsCoreObsCore 1.1dataproduct_typeLogical data product typemeta.code.classobscore:ObsDataset.dataProductTypeVARCHARcalib_levelCalibration levelmeta.code;obs.calibobscore:ObsDataset.calibLevelINTEGERobs_collectionName of the data collectionmeta.idobscore:DataID.CollectionVARCHARobs_idObservation IDmeta.idobscore:DataID.observationIDVARCHARobs_publisher_didDataset identifier given by the publishermeta.ref.ivoidobscore:Curation.PublisherDIDVARCHARaccess_urlURL used to access (download) datasetmeta.ref.urlobscore:Access.ReferenceCLOBaccess_formatFile content formatmeta.code.mimeobscore:Access.FormatVARCHARtarget_nameAstronomical object observed, if anymeta.id;srcobscore:Target.NameVARCHARs_raCentral right ascension, ICRSdegpos.eq.raobscore:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1DOUBLEs_decCentral declination, ICRSdegpos.eq.decobscore:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2DOUBLEs_fovDiameter (bounds) of the covered regiondegphys.angSize;instr.fovobscore:Char.SpatialAxis.Coverage.Bounds.Extent.diameterDOUBLEs_regionRegion covered as specified in STC or ADQLpos.outline;obs.fieldobscore:Char.SpatialAxis.Coverage.Support.AreaREGIONs_resolutionSpatial resolution of data as FWHMarcsecpos.angResolutionobscore:Char.SpatialAxis.Resolution.Refval.valueDOUBLEt_minStart time in MJDdtime.start;obs.exposureobscore:Char.TimeAxis.Coverage.Bounds.Limits.StartTimeDOUBLEt_maxStop time in MJDdtime.end;obs.exposureobscore:Char.TimeAxis.Coverage.Bounds.Limits.StopTimeDOUBLEt_exptimeTotal exposure timestime.duration;obs.exposureobscore:Char.TimeAxis.Coverage.Support.ExtentDOUBLEt_resolutionTemporal resolution FWHMstime.resolutionobscore:Char.TimeAxis.Resolution.Refval.valueDOUBLEem_minStart in spectral coordinatesmem.wl;stat.minobscore:Char.SpectralAxis.Coverage.Bounds.Limits.LoLimitDOUBLEem_maxStop in spectral coordinatesmem.wl;stat.maxobscore:Char.SpectralAxis.Coverage.Bounds.Limits.HiLimitDOUBLEem_res_powerSpectral resolving powerspect.resolutionobscore:Char.SpectralAxis.Resolution.resolpower.refvalDOUBLEo_ucdUCD of observable (e.g. phot.flux.density)meta.ucdobscore:Char.ObservableAxis.ucdVARCHARpol_statesList of polarization states or NULL if not applicablemeta.code;phys.polarizationobscore:Char.PolarizationAxis.stateListVARCHARfacility_nameName of the instrument used for this observationmeta.id;instr.telobscore:Provenance.ObsConfig.Facility.nameVARCHARinstrument_nameInstrument namemeta.id;instrobscore:Provenance.ObsConfig.Instrument.nameVARCHARdataproduct_subtypeData product specific typemeta.code.classobscore:ObsDataset.dataProductSubtypeVARCHARtarget_classClass of the target object as in SSAsrc.classobscore:Target.classVARCHARobs_creation_dateDate when the dataset was createdtime;meta.datasetobscore:DataID.DateTIMESTAMPobs_creator_nameName of the creator of the datameta.idobscore:DataID.CreatorVARCHARobs_creator_didIVOA dataset identifier given by the creatormeta.idobscore:DataID.CreatorDIDVARCHARobs_titleBrief description of dataset in free formatmeta.title;obsobscore:DataID.TitleVARCHARpublisher_idIVOA-ID for the Publishermeta.ref.ivoidobscore:Curation.PublisherIDVARCHARdata_rightsData rightsmeta.codeobscore:Curation.RightsVARCHARobs_release_dateObservation release date (ISO 8601)time.releaseobscore:Curation.releaseDateTIMESTAMPs_resolution_minResolution min value on spectral axis (FHWM of PSF)arcsecpos.angResolution;stat.minobscore:Char.SpatialAxis.Resolution.Bounds.Limits.LoLimitDOUBLEs_resolution_maxResolution max value on spectral axisarcsecpos.angResolution;stat.maxobscore:Char.SpatialAxis.Resolution.Bounds.Limits.HiLimitDOUBLEs_calib_statusType of calibration along the spatial axismeta.code.qualobscore:Char.SpatialAxis.calibrationStatusVARCHARs_stat_errorAstrometric precision along the spatial axisarcsecstat.error;pos.eqobscore:Char.SpatialAxis.Accuracy.statError.refval.valueDOUBLEt_calib_statusType of time coord calibrationmeta.code.qualobscore:Char.TimeAxis.calibrationStatusVARCHARt_stat_errorTime coord statistical errorsstat.error;timeobscore:Char.TimeAxis.Accuracy.StatError.Refval.valueDOUBLEem_ucdNature of the spectral axismeta.ucdobscore:Char.SpectralAxis.ucdVARCHARem_unitUnits along the spectral axismeta.unitobscore:Char.SpectralAxis.unitVARCHARem_res_power_minResolving power min value on spectral axisspect.resolution;stat.minobscore:Char.SpectralAxis.Resolution.ResolPower.LoLimitDOUBLEem_res_power_maxResolving power max value on spectral axisspect.resolution;stat.maxobscore:Char.SpectralAxis.Resolution.ResolPower.HiLimitDOUBLEem_calib_statusType of spectral coord calibrationmeta.code.qualobscore:Char.SpectralAxis.calibrationStatusVARCHARo_unitUnits used for the observable valuesmeta.unitobscore:Char.ObservableAxis.unitVARCHARo_calib_statusLevel of calibration for the observable coordmeta.code.qualobscore:Char.ObservableAxis.calibrationStatusVARCHARo_stat_error_typeErrormeta.code.statusVARCHARproposal_idIdentifier of proposal to which observation belongsmeta.id;obs.proposalobscore:Provenance.Proposal.identifierVARCHARaccess_estsizeEstimated size of dataset in kBkbytephys.size;meta.fileobscore:Access.SizeBIGINTs_xel1Number of elements along the first spatial axismeta.numberobscore:Char.SpatialAxis.numBins1BIGINTprincipals_xel2Number of elements along the second spatial axismeta.numberobscore:Char.SpatialAxis.numBins2BIGINTprincipalt_xelNumber of elements along the time axismeta.numberobscore:Char.TimeAxis.numBinsBIGINTprincipalem_xelNumber of elements along the spectral axismeta.numberobscore:Char.SpectralAxis.numBinsBIGINTprincipalpol_xelNumber of polarization samplesmeta.numberobscore:Char.PolarizationAxis.numBinsBIGINTprincipalivoa.obsplanObservation Locator 0.4ivo://ivoa.net/std/obsloctap#table-1.0t_planningPlanning time in MJDdDOUBLEtarget_nameAstronomical object observed, if anymeta.id;srcTarget.nameVARCHARobs_idObservation IDmeta.idDataID.observationIDVARCHARobs_collectionName of the data collectionmeta.idDataID.collectionVARCHARs_raCentral right ascension, ICRSdegpos.eq.raChar.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1DOUBLEs_decCentral declination, ICRSdegpos.eq.decChar.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2DOUBLEs_fovDiameter (bounds) of the covered regiondegphys.angSize;instr.fovChar.SpatialAxis.Coverage.Bounds.Extent.diameterDOUBLEs_resolutionSpatial resolution of data as FWHMarcsecpos.angResolutionChar.SpatialAxis.Resolution.Refval.valueDOUBLEt_minStart time in MJDdtime.start;obs.exposureChar.TimeAxis.Coverage.Bounds.Limits.StartTimeDOUBLEt_maxStop time in MJDdtime.end;obs.exposureChar.TimeAxis.Coverage.Bounds.Limits.StopTimeDOUBLEt_exptimeTotal exposure timestime.duration;obs.exposureChar.TimeAxis.Coverage.Support.ExtentDOUBLEt_resolutionTemporal resolution FWHMstime.resolutionChar.TimeAxis.Resolution.Refval.valueDOUBLEem_minStart in spectral coordinatesmem.wl;stat.minChar.SpectralAxis.Coverage.Bounds.Limits.LoLimitDOUBLEem_maxStop in spectral coordinatesmem.wl;stat.maxChar.SpectralAxis.Coverage.Bounds.Limits.HiLimitDOUBLEem_res_powerSpectral resolving powerspect.resolutionChar.SpectralAxis.Resolution.ResolPower.refValDOUBLEo_ucdUCD of observable (e.g., phot.flux.density, phot.count, etc.)meta.ucdChar.ObservableAxis.ucdVARCHARpol_statesList of polarization states or NULL if not applicablemeta.code;phys.polarizationChar.PolarizationAxis.stateListVARCHARpol_xelNumber of polarization samplesmeta.numberChar.PolarizationAxis.numBinsINTEGERfacility_nameName of the facility used for this observationmeta.id;instr.telProvenance.ObsConfig.Facility.nameVARCHARinstrument_nameName of the instrument used for this observationmeta.id;instrProvenance.ObsConfig.Instrument.nameVARCHARobs_release_dateObservation release date (ISO 8601)time.releaseTIMESTAMPt_plan_exptimePlanned or scheduled exposure timestime.duration;obs.exposureChar.TimeAxis.Coverage.Support.ExtentDOUBLEcategoryObservation category. One of the following values: Fixed, Coordinated, Window, OtherVARCHARpriorityPriority level {0, 1, 2}INTEGERexecution_statusOne of the following values: Planned, Scheduled, Unscheduled, Performed, AbortedVARCHARs_regionSky region covered by the data product (expressed in ICRS frame)pos.outline;obs.fieldChar.SpatialAxis.Coverage.Support.AreaVARCHARtracking_typeOne of the following values: Sidereal, Solar-system-object-tracking, Fixed-az-el-transitVARCHARcxcChandra observation catalogcxc.proposalChandra proposalnumberChandra proposal numbermeta.id;obs.proposalVARCHARprincipalindexedtitleTitlemeta.titleVARCHARprincipalcategorySubject category, e.g. Clusters of Galaxies, Stars and WD, Solar Systemmeta.codeVARCHARprincipal"PI"Principal investigatorVARCHARprincipaltypeTime allocation type: General Observer (GO), Guaranteed Time Observer (GTO), Directors Discretionary Time (DDT), Target of Opportunity (TOO), Calbration (CAL), Chandra Legacy Program (CLP)meta.codeVARCHARabstractAbstractCLOBcxc.observationChandra observationobsidChandra observation identifiermeta.idINTEGERprincipalindexedtarget_nameTarget namemeta.id;srcVARCHARprincipalraRight ascension, ICRS(J2000)degpos.eq.raDOUBLEprincipaldecDeclination, ICRS(J2000)degpos.eq.decDOUBLEprincipalgal_lGalactic longitudedegpos.galactic.lonDOUBLEgal_bGalactic latitudedegpos.galactic.latDOUBLEinstrumentInstrument: ACIS, ACIS-I, ACIS-S, HRC, HRC-I, HRC-Smeta.id;instrVARCHARprincipalgratingGrating: LETG, HETG, Nonemeta.id;instrVARCHARprincipalproposal_numberChandra proposal numbermeta.id;obs.proposalVARCHARprincipalstatusObservation status: unobserved, scheduled, observed, archivedmeta.code.qualVARCHARprincipalstart_dateStart date of the observation (UTC)time.startTIMESTAMPprincipalpublic_avail_dateDate of public availability of the datatime.releaseTIMESTAMPprincipalexposure_timeTotal exposure timekstime.duration;obs.exposureDOUBLEprincipalexposure_modeExposure mode: ACIS Timed Exposure (TE), ACIS Continuous Clocking (CC), HRC Timinginstr.setupVARCHARprincipalevent_countTotal event countphot.countINTEGERevent_count_rateEvent count per secondHzarith.rate;phot.countDOUBLEsequence_numSequence number, relates with other observationsmeta.id;obs.sequenceVARCHARgrid_nameGrid name, relates with other observations in same gridmeta.idVARCHARjoint_obsJoint observation, relates with coordinated observations in other observatoriesmeta.codeVARCHARcxc.proposalproposal_numbernumbercxc.imageSIAP images viewnameImage titleVOX:Image_TitleVARCHARprincipalraSource position, ICRS right ascensiondegPOS_EQ_RA_MAINstc:AstroCoords.Position2D.Value2.C1DOUBLEprincipaldecSource position, ICRS declinationdegPOS_EQ_DEC_MAINstc:AstroCoords.Position2D.Value2.C3DOUBLEprincipalaccrefAccess referenceVOX:Image_AccessReferenceVARCHARprincipalnaxesNumber of image axesVOX:Image_NaxesINTEGERnaxisArray of length in pixels of each image axisVOX:Image_NaxisINTEGERimgfmtMIME-type of the object associated with the image access referenceVOX:Image_FormatVARCHARprincipaldate_obsEpoch at midpoint of observationdVOX:Image_MJDateObsDOUBLEprincipalimgscaleArray of image scale for each image axisdeg/pixelVOX:Image_ScaleDOUBLEprincipalobsidChandra observation identifierID_MAININTEGERprincipalindexedinstrumentInstrumentINST_IDVARCHARprincipalexptimeExposure timeksTIME_EXPTIMEDOUBLEprincipalbandpassBandpassVOX:BandPass_IDVARCHARbandpass_unitBandpass unitVOX:BandPass_UnitVARCHARbandloLow limit of the bandpasskeVVOX:BandPass_LoLimitDOUBLEprincipalbandhiHigh limit of the bandpasskeVVOX:BandPass_HiLimitDOUBLEprincipalfilesizeFilesizebyteVOX:Image_FileSizeINTEGERpixflagsFlags specifying processing of image (C:copy without change)VOX:Image_PixFlagsVARCHARinstituteInstituteOBSTY_IDVARCHARcxc.observationobsidobsidcxc.coneChandra cone viewobsidChandra observation identifierID_MAINVARCHARprincipalindexedtarget_nameTarget nameID_TARGETVARCHARprincipalraRight ascension, ICRS(J2000)degPOS_EQ_RA_MAINDOUBLEprincipaldecDeclination, ICRS(J2000)degPOS_EQ_DEC_MAINDOUBLEprincipalgal_lGalactic longitudedegPOS_GAL_LONDOUBLEgal_bGalactic latitudedegPOS_GAL_LATDOUBLEinstrumentInstrument: ACIS, ACIS-I, ACIS-S, HRC, HRC-I, HRC-SINST_IDVARCHARprincipalgratingGrating: LETG, HETG, NoneINST_SPECT_CODEVARCHARprincipalproposal_numberChandra proposal numberID_CANDIDATEVARCHARprincipalstatusObservation status: unobserved, scheduled, observed, archivedCODE_QUALITYVARCHARprincipalstart_dateStart date of the observation (UTC)TIME_DATETIMESTAMPprincipalpublic_avail_dateDate of public availability of the dataTIME_DATETIMESTAMPprincipalexposure_timeTotal exposure timeksTIME_EXPTIMEDOUBLEprincipalexposure_modeExposure mode: ACIS Timed Exposure (TE), ACIS Continuous Clocking (CC), HRC TimingINST_SETUPVARCHARprincipalevent_countTotal event countphot.countINTEGERevent_count_rateEvent count per secondHzPHOT_COUNTS_RATIODOUBLEsequence_numSequence number, relates with other observationsID_NUMBERVARCHARgrid_nameGrid name, relates with other observations in same gridID_GROUPVARCHARjoint_obsJoint observation, relates with coordinated observations in other observatoriesOBS_OTHERVARCHARcxc.coneobsidobsid