Table information for 'wfpdb.main'


Table Description: WFPDB's table of plates, including position observed and the epoch of observation.

This table is available for ADQL queries and through the TAP endpoint.

Resource Description:

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)

For a list of all services and tables belonging to this table's resource, see Information on resource 'Wide-Field Plate Database WFPDB'

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference 1995LNP...454..412T (ADS BibTeX entry for the publication) either in addition to or instead of the service reference.

To cite the table as such, we suggest the following BibTeX entry:

  title={{WFPDB} {TAP}-queriable Table},
  author={Tsvetkov, M.K. and Stavrev, K.Y. and Tsvetkova, K.P. and Mutafov, A.S. and Semkov, E.H. and Kalaglarsky, D.},
  howpublished={{VO} resource provided by the {GAVO} Data Center}


Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
instr_id Instr. WFPDB instrument identifier. TDB: Foreign key N/A;instr
wfpdbid Wfpdbid WFPDB identifier of the plate, consisting of an observatory identifier, the instrument aperture, an instrument suffix, a plate number, and a suffix to it. N/A;meta.main
raj2000 RA Right ascension of the plate center (ICRS) [Note p] deg pos.eq.ra;meta.main
dej2000 Dec Declination of the plate center (ICRS) [Note p] deg pos.eq.dec;meta.main
coord_problem Coords? Quality flag for the coordinates (empty means no known problems) N/A meta.note
epoch Obs. Epoch Epoch of observation start (UT) yr time.epoch
time_problem Epoch? Quality flag for the epoch (empty means no known problems) N/A meta.note
object Object Object or field name as given by observer N/A;src
object_type Type Type of the target object N/A src.class
method Method Method of observation N/A instr.setup
exptime Exp. Time Exposure time (for multiple exposures, this is for the first exposure; for the others, see notes) s time.duration;obs.exposure
emulsion Emulsion Emulsion type N/A instr.plate.emulsion
filter Filter Filter type N/A;instr.filter
waveband Band Spectral Band N/A instr.bandpass
xsize Width Width of the plate cm phys.size;instr.det
ysize Height Height of the plate cm phys.size;instr.det
observer Observer Name(s) of the persons having performed the observation. N/A
notes Notes Various longer remarks N/A meta.note
quality Quality Quality-related information in free text. N/A meta.note
availability Availability Free text on how to find the plate. N/A meta.note
digitization Digitization Information on possible ways to access plate scans in free text. N/A meta.note

Columns that are parts of indices are marked like this.


The following services may use the data contained in this table:


VO nerds may sometimes need VOResource XML for this table.