wfpdb.mainivo://org.gavo.dc/wfpdb/q/mainThe GAVO DC teamTsvetkov, M.K.Stavrev, K.Y.Tsvetkova, K.P.Mutafov, A.S.Semkov, E.H.Kalaglarsky, D.2022-11-03T09:37:29ZGAVO Data Centre Team

Mönchhofstrasse 12-14, D-69120 Heidelberg

gavo@ari.uni-heidelberg.de+49 6221 54 1837astrophotographyhistory-of-astronomy WFPDB's table of plates, including position observed and the epoch of observation.1995LNP...454..412Thttps://dc.g-vo.org/tableinfo/wfpdb.main0/0-110 120579Opticalwfpdb The Wide-Field Plate Database (WFPDB_) contains the descriptive information for the astronomical wide-field (>1°) photographic observations stored in numerous archives all over the world. The total number of these observations, obtained since the end of the 19th century with more then 200 instruments (telescopes) is about 2 550 000 from 509 archives. The WFPDB is continually being updated, providing currently access to the information for about 640 000 plates from 117 plate archives (30% of the estimated total number of wide-field plates) .. _WFPDB: http://www.skyarchive.org/wfpdb.main WFPDB's table of plates, including position observed and the epoch of observation.609884instr_idWFPDB instrument identifier. TDB: Foreign keymeta.id;instrcharindexednullablewfpdbidWFPDB identifier of the plate, consisting of an observatory identifier, the instrument aperture, an instrument suffix, a plate number, and a suffix to it.meta.id;meta.maincharindexedprimaryraj2000Right ascension of the plate center (ICRS)degpos.eq.ra;meta.mainfloatindexednullabledej2000Declination of the plate center (ICRS)degpos.eq.dec;meta.mainfloatindexednullablecoord_problemQuality flag for the coordinates (empty means no known problems)meta.notecharnullableepochEpoch of observation start (UT)yrtime.epoch1858.882189.01doubleindexednullabletime_problemQuality flag for the epoch (empty means no known problems)meta.notecharnullableobjectObject or field name as given by observermeta.id;srcunicodeCharindexednullableobject_typeType of the target objectsrc.classcharindexednullablemethodMethod of observationinstr.setupcharnullableexptimeExposure time (for multiple exposures, this is for the first exposure; for the others, see notes)stime.duration;obs.exposurefloatnullableemulsionEmulsion typeinstr.plate.emulsioncharnullablefilterFilter typemeta.id;instr.filtercharnullablewavebandSpectral Bandinstr.bandpasscharindexednullablexsizeWidth of the platecmphys.size;instr.detfloatnullableysizeHeight of the platecmphys.size;instr.detfloatnullableobserverName(s) of the persons having performed the observation.obs.observerunicodeCharnullablenotesVarious longer remarksmeta.noteunicodeCharnullablequalityQuality-related information in free text.meta.noteunicodeCharnullableavailabilityFree text on how to find the plate.meta.notecharnullabledigitizationInformation on possible ways to access plate scans in free text.meta.noteunicodeCharnullablewfpdb.archivesinstr_idinstr_id