bgds2.ssa_time_sivo://org.gavo.dc/bgds/l2/ssa_time_seriesdoi:10.21938/dChYyzuCGA00rsfzfQ8v:QThe GAVO DC teamBlex, J.Hackstein, M.Westhues, C.Ramolla, M.Demleitner, M.Fein, C.Chini, R.2026-04-07T10:09:44ZGAVO Data Centre Team

Mönchhofstrasse 12-14, D-69120 Heidelberg

gavo@ari.uni-heidelberg.de+49 6221 54 1837surveysgalaxy-planesmilky-way-galaxyvariable-starsbroad-band-photometrytime-domain-astronomy This table contains metadata about the photometric time series from BGDS in IVOA SSA format. The actual data is available through a datalink service or in the lc_all table.2026AN....34770087Bhttp://dc.g-vo.org/tableinfo/bgds2.ssa_time_seriesSurveyResearchIsNewVersionOfBGDS light curves DR1IsServedByGAVO Data Center ObscoreUniversitätssternwarte Bochum near Cerro ArmazonesRobotic Bochum Twin Telescope (RoBoTT)3/336,338,450-451,461,472,591-592,613,615,621,651-652,659,662-663 4/1301,1303,1358,1376-1377,1379-1380,1382,1794,1816,1818-1819,1822-1823,1829,1840-1841,1892,1894,1897,2327,2333,2335,2357-2359,2376,2378,2400,2402,2408,2492-2493,2495,2528,2530,2536,2538,2591,2599,2601-2603,2612-2614,2616,2634-2635,2643,2646-2647,2656-2657,2688-269055439 58751.41.777e-19 6.621e-19OpticaltimeseriesivoaDefinition and support code for the ObsCore data model and table.ivoa.obscoreThis data collection is queryable in GAVO Data Center's obscore table.bgds2 From the Bochum Galactic Disk Survey, time series have been obtained in the r and i bands on an (up to) nightly basis. Depending on the field, the time series contain up to more than 300 nights over 9 years. Each measurement in r and i represents the averaged flux over 10 minutes of observation (from 9 averaged 10s images). Additionally, intermittent measurements in Johnson UVB, Sloan z and the narrowbands OIII, NB, Halpha and SII have been recorded as well. The Bochum Galactic Disk Survey is a project to monitor the stellar content of the Galactic disk in a 6 degree wide stripe centered on the Galactic plane. The data has been recorded from September 2010 to September 2019 in Sloan r and i simultaneously with the Robotic Bochum Twin Telescope (RoBoTT) at the Universitaetssternwarte Bochum near Cerro Armazones in the Chilean Atacama desert. It contains measurements of about 2x10^7 stars over nine years. The source images are available from ivo://org.gavo.dc/bgds/q/sia.bgds2.ssa_time_series This table contains metadata about the photometric time series from BGDS in IVOA SSA format. The actual data is available through a datalink service or in the lc_all table.57085431accrefAccess key for the datameta.ref.url;meta.datasetssa:Access.ReferencecharindexednullableownerOwner of the datacharnullableembargoDate the data will become/became publicyrcharnullablemimeMIME type of the file servedmeta.code.mimessa:Access.FormatcharnullableaccsizeSize of the data in bytesbytessa:Access.Sizelongnullablessa_dstitleA compact and descriptive designation of the dataset.meta.title;meta.datasetssa:DataID.Titlecharssa_creatordidDataset identifier assigned by the creatormeta.idssa:DataID.CreatorDIDcharnullablessa_pubdidDataset identifier assigned by the publishermeta.ref.ivoidssa:Curation.PublisherDIDcharindexednullablessa_cdateProcessing/Creation datetime;meta.datasetssa:DataID.Datecharnullablessa_pdateDate last published.ssa:Curation.Datecharnullablessa_bandpassBandpass (i.e., rough spectral location) of this dataset; this should be the most appropriate term from the vocabulary http://www.ivoa.net/rdf/messenger.instr.bandpassssa:DataID.Bandpasscharnullablessa_cversionCreator assigned version for this dataset (will be incremented when this particular item is changed).meta.version;meta.datasetssa:DataID.Versioncharnullablessa_targnameCommon name of object observed.meta.id;srcssa:Target.Namecharindexedssa_targclassObject class (star, QSO,...; use Simbad object classification http://simbad.u-strasbg.fr/simbad/sim-display?data=otypes if at all possible)src.classssa:Target.Classcharnullablessa_redshiftRedshift of target objectsrc.redshiftssa:Target.Redshiftfloatnullablessa_targetposEquatorial (ICRS) position of the target object.pos.eq;srcssa:Target.pos.spointdoublenullablessa_snrSignal-to-noise ratio estimated for this datasetstat.snrssa:Derived.SNRfloatnullablessa_locationICRS location of aperture centerdegpos.eqssa:Char.SpatialAxis.Coverage.Location.Valuedoubleindexednullablessa_apertureAngular diameter of aperturedegphys.angSize;instr.fovssa:Char.SpatialAxis.Coverage.Bounds.Extentfloatnullablessa_dateobsMidpoint of exposure (MJD)dtime.epochssa:Char.TimeAxis.Coverage.Location.Valuedoublenullablessa_timeextExposure durationstime.durationssa:Char.TimeAxis.Coverage.Bounds.Extentfloatnullablessa_specmidMidpoint of region covered in this datasetminstr.bandpassssa:Char.SpectralAxis.Coverage.Location.Valuefloatnullablessa_specextWidth of the spectrumminstr.bandwidthssa:Char.SpectralAxis.Coverage.Bounds.Extentfloatnullablessa_specstartLower value of spectral coordinatemem.wl;stat.minssa:Char.SpectralAxis.Coverage.Bounds.Startfloatnullablessa_specendUpper value of spectral coordinatemem.wl;stat.maxssa:Char.SpectralAxis.Coverage.Bounds.Stopfloatnullablessa_lengthNumber of points in the spectrumssa:Dataset.Lengthintnullablessa_dstypeType of data (spectrum, time series, etc)ssa:Dataset.Typecharnullablessa_publisherPublisher of the datasets included here.meta.curationssa:Curation.Publishercharnullablessa_creatorCreator of the datasets included here.ssa:DataID.CreatorunicodeCharnullablessa_collectionA short handle naming the collection this spectrum belongs to.ssa:DataID.Collectioncharnullablessa_instrumentInstrument or code used to produce these datasetsmeta.id;instrssa:DataID.Instrumentcharnullablessa_datasourceMethod of generation for the data (one of survey, pointed, theory, custom, artificial).ssa:DataID.DataSourcecharnullablessa_creationtypeProcess used to produce the data (archival, cutout, filtered, mosaic, projection, spectralExtraction, or catalogExtraction)ssa:DataID.CreationTypecharnullablessa_referenceURL or bibcode of a publication describing this data.meta.bib.bibcodessa:Curation.Referencecharnullablessa_fluxstaterrorStatistical error in fluxs**-1stat.error;phot.flux.density;emssa:Char.FluxAxis.Accuracy.StatErrorfloatnullablessa_fluxsyserrorSystematic error in fluxs**-1stat.error.sys;phot.flux.density;emssa:Char.FluxAxis.Accuracy.SysErrorfloatnullablessa_fluxcalibType of flux calibration (ABSOLUTE, CALIBRATED, RELATIVE, NORMALIZED, or UNCALIBRATED).ssa:Char.FluxAxis.Calibrationcharnullablessa_binsizeBin size in wavelengthmem.wl;spect.binSizessa:Char.SpectralAxis.Accuracy.BinSizefloatnullablessa_spectstaterrorStatistical error in wavelengthmstat.error;emssa:Char.SpectralAxis.Accuracy.StatErrorfloatnullablessa_spectsyserrorSystematic error in wavelengthmstat.error.sys;emssa:Char.SpectralAxis.Accuracy.SysErrorfloatnullablessa_speccalibType of wavelength calibrationmeta.code.qualssa:Char.SpectralAxis.Calibrationcharnullablessa_specresResolution (in meters of wavelength) on the spectral axismspect.resolution;em.wlssa:Char.SpectralAxis.Resolutionfloatnullableobs_idMain identifier of this observation (a single object may have multiple observations in different bands and fields)meta.id;meta.maincharnullabletime_minFirst timestamp in time series (MJD Topocentric UTC)dtime.epoch;stat.min554505545055693.256559.158309.21doublenullabletime_maxLast timestamp in time series (MJD Topocentric UTC)dtime.epoch;stat.max5545357142.15824658739.1587411doublenullableampDifference between brightest and weakest observation.magphot.mag;em.opt;arith.diff00.015640.185370.65400714.61floatnullablemed_magMedian magnitude in the band given in the band_name columnmagphot.mag;em.opt6.8390612.165215.34316.243716.4771floatnullablefieldSurvey field observed.meta.id;obs.fieldcharnullableraICRS right ascension for this object as mean of the positions obtained from source extraction.pos.eq.ra;meta.main100.047103.78152.056280.33283.6751doublenullabledecICRS declination for this object as mean of the positions obtained from the source extraction.pos.eq.dec;meta.main-65.9373-64.2493-34.0598-4.278910.605271doublenullablemjdsAn array containing the time values of the time seriesdtime.epochdoublenullablemagsAn array containing the magnitudes for band_name and the times in mjdmagphot.mag;em.optfloatnullablemag_errsErrors in magsmagstat.error;phot.mag;em.optfloatnullablegdr3_idGaia DR3 source_id of this object.meta.id.cross29296384285929734403.0276701637698514e+185.334893060128903e+186.053414365808342e+1860709987389031877120.99951667longnullablevar1 if the light curves was classified as variable. 0 otherwise. The variability analysis is done only for r and i.meta.code;src.var00.00.00.011.0shortnullable