I/305ivo://CDS.VizieR/I/305CDSLasker B.Lattanzi M.G.McLean B.J.et al.2025-10-27T14:20:50Z2007-05-04T12:30:58ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsurveysastrometryphotographic-magnitudegalaxy-classification-systemsThe GSC II is an all-sky catalog based on 1" resolution scans of the photographic Sky Survey plates, at two epochs and three bandpasses, from the Palomar and UK Schmidt telescopes (DSS). Positions, magnitudes, and classifications are produced for all objects on each plate. The objects are then loaded into the COMPASS database, where multiple observations of the same object are matched and assigned a unique name. The GSC2.3 has no magnitude limit. The parameters of the bright objects, overexposed on the Schmidt plates, are taken from the Tycho-2 (I/259) catalog. The computed proper motions are not yet publically available because of 10mas/year systematic errors discovered for the southern hemisphere that are still under investigation.2008AJ....136..735Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/I/305CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttp://gsss.stsci.edu/catalogs/gsc/gsc2/gsc2.htm : the GSC-II Home PageI/254 : The HST Guide Star Catalog, Version 1.2 (Lasker+ 1996)I/259 : The Tycho-2 Catalogue (Hog+ 2000)I/271 : The Guide Star Catalog, Version 2.2 (GSC2.2) (STScI, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=I/305https://vizier.iucaa.in/viz-bin/VizieR-2?-source=I/305http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=I/305https://vizier.cds.unistra.fr/viz-bin/votable?-source=I/305https://vizier.iucaa.in/viz-bin/votable?-source=I/305http://vizieridia.saao.ac.za/viz-bin/votable?-source=I/305GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table I/305/out (records of GSC2.3.2 (near 0+0))https://vizier.cds.unistra.fr/viz-bin/conesearch/I/305/out?https://vizier.iucaa.in/viz-bin/conesearch/I/305/out?http://vizieridia.saao.ac.za/viz-bin/conesearch/I/305/out?GETtext/xml+votable180.050000true44.9960650.0056570.005555555555555556Hips catalogue for table I/305/outhttps://hipscat.cds.unistra.fr/HiPSCatService/I/305/out0/0-11 6/2.2969843216958213e-19 6.118840631666147e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/I/305?format=asciiOpticaldefaultI/305/outrecords of GSC2.3.2 (near 0+0)GSC2.3[NS0-9A-Z] Identification of the object (1)meta.id;meta.maincharprimaryindexedRAJ2000? Right Ascension (J2000), at "Epoch"degpos.eq.ra;meta.mainnullableDEJ2000? Declination in (J2000), at "Epoch"degpos.eq.dec;meta.mainnullableGSC1Identification in GSC Version 1 (Cat. I/254)meta.notecharHTM6[NS0-3] HTM-6 designation as in GSC2.2 (1)obs.fieldchare_RAJ2000Mean error on RAdeg (2)arcsecstat.error;pos.eq.rafloate_DEJ2000Mean error on DEdeg (2)arcsecstat.error;pos.eq.decfloatEpochEpoch of the positionyrtime.epochdoubleindexedFmag? Magnitude in F photographic band (red)magphot.mag;em.opt.Rfloatnullableindexede_Fmag? Mean error on Fmagmagstat.error;phot.magfloatnullablen_Fmag? Coded emulsion / bandpass / filter (2)meta.noteintnullablejmag? Magnitude in Bj photographic band (blue)magphot.mag;em.opt.Bfloatnullableindexede_jmag? Mean error on jmagmagstat.error;phot.magfloatnullablen_jmag? Coded emulsion / bandpass / filter (2)meta.noteintnullableVmag? Magnitude in V photographic band (green)magphot.mag;em.opt.Vfloatnullableindexede_Vmag? Mean error on Vmagmagstat.error;phot.magfloatnullablen_Vmag? Coded emulsion / bandpass / filter (2)meta.noteintnullableNmag? Magnitude in N photographic band (0.8{mu}m)magphot.mag;em.IR.8-15umfloatnullableindexede_Nmag? Mean error on Nmagmagstat.error;phot.magfloatnullablen_Nmag? Coded emulsion / bandpass / filter (2)meta.noteintnullableUmag? Magnitude in U band (Johnson)magphot.mag;em.opt.Ufloatnullablee_Umag? Mean error on Umagmagstat.error;phot.magfloatnullablen_Umag? Coded emulsion / bandpass / filter (2)meta.noteintnullableBmag? Magnitude in B band (Johnson blue)magphot.mag;em.opt.Bfloatnullablee_Bmag? Mean error on Bmagmagstat.error;phot.magfloatnullablen_Bmag? Coded emulsion / bandpass / filter (2)meta.noteintnullableClass[0,5] Object class (3)meta.code.classintStatusSource status flag (4)meta.code.errorlongM[M] 'M' for multiple object (5)phot.mag;em.IR.4-8umchara? Semi-major axis of fitting ellipsepixphys.angSize;srcdoublenullablee? Eccentricity of fitting ellipsesrc.orbital.eccentricityfloatnullableaPA? Position angle (N->E) of fitting ellipsedegpos.posAngfloatnullable