astroquery.vo_conesearch.vos_catalog.call_vo_service(service_type, catalog_db=None, pedantic=None, verbose=True, cache=True, kwargs={})[source]

Makes a generic VO service call.

service_type : str

Name of the type of service, e.g., ‘conesearch_good’. Used in error messages and to select a catalog database if catalog_db is not provided.


May be one of the following, in order from easiest to use to most control:

  • None: A database of service_type catalogs is downloaded from astroquery.vo_conesearch.conf.vos_baseurl. The first catalog in the database to successfully return a result is used.
  • catalog name: A name in the database of service_type catalogs at astroquery.vo_conesearch.conf.vos_baseurl is used. For a list of acceptable names, use list_catalogs().
  • url: The prefix of a URL to a IVOA Service for service_type. Must end in either ‘?’ or ‘&’.
  • VOSCatalog object: A specific catalog manually downloaded and selected from the database (see General VO Services Access).
  • Any of the above 3 options combined in a list, in which case they are tried in order.
pedantic : bool or None

When True, raise an error when the file violates the spec, otherwise issue a warning. Warnings may be controlled using warnings module. When not provided, uses the configuration setting astroquery.vo_conesearch.conf.pedantic, which defaults to False.

verbose : bool

Verbose output.

cache : bool

Use caching for VO Service database. Access to actual VO websites referenced by the database still needs internet connection.

kwargs : dictionary

Keyword arguments to pass to the catalog service. No checking is done that the arguments are accepted by the service, etc.

obj :

First table from first successful VO service request.


If VO service request fails.