Author image Graham Bell
and 3 contributors


Astro::Catalog::Query::Vizier - A query request to the Vizier catalogs


  $gsc = new Astro::Catalog::Query::2MASS( Catalog => '2MASS',
                                           RA        => $ra,
                                           Dec       => $dec,
                                           Radius    => $radius,
                                           Nout      => $number_out,
                                           Target    => $object,

  my $catalog = $gsc->querydb();


The module is an object orientated interface to the online Vizier catalogs. Multiple catalogues can be specified using a comma-separated list.

Stores information about an prospective query and allows the query to be made, returning an Astro::Catalog::Query::Vizier object.

The object will by default pick up the proxy information from the HTTP_PROXY and NO_PROXY environment variables, see the LWP::UserAgent documentation for details.

See Astro::Catalog::Query for the catalog-independent methods.


See for all the options supported by Vizier (although they will be the translated form rather than the abstracted arguments used by Astro::Catalog.


Copyright (C) 2001 University of Exeter. All Rights Reserved. Some modifications copyright (C) 2003 Particle Physics and Astronomy Research Council. All Rights Reserved.

This program was written as part of the eSTAR project and is free software; you can redistribute it and/or modify it under the terms of the GNU Public License.


Alasdair Allan <>, Tim Jenness <>