get_catalog

jwst.tweakreg.astrometric_utils.get_catalog(ra, dec, epoch=2016.0, sr=0.1, catalog='GAIADR3')[source]

Extract catalog from VO web service.

Parameters:

  • ra (float) – Right Ascension (RA) of center of field-of-view (in decimal degrees)

  • dec (float) – Declination (Dec) of center of field-of-view (in decimal degrees)

  • epoch (float, optional) – Reference epoch used to update the coordinates for proper motion (in decimal year). Default: 2016.0

  • sr (float, optional) – Search radius (in decimal degrees) from field-of-view center to use for sources from catalog. Default: 0.1 degrees

  • catalog (str, optional) – Name of catalog to query, as defined by web-service. Default: ‘GAIADR3’

Returns:

csv – CSV object of returned sources with all columns as provided by catalog

Return type:

CSV object