frb.surveys.desi

DESI

class frb.surveys.desi.DESI_Survey(coord, radius, **kwargs)[source]

Bases: DL_Survey

Class to handle queries on the DESI survey

Child of DL_Survey which uses datalab to access NOAO

Args:

  • coord (SkyCoord) – Coordinate for surveying around

  • radius (Angle) – Search radius around the coordinate

__init__(coord, radius, **kwargs)[source]
get_catalog(query=None, query_fields=None, print_query=False, exclude_stars=False, zcat_primary_only=True, **kwargs)[source]

Grab a catalog of sources around the input coordinate to the search radius

Args:

  • query – SQL query

  • query_fields (list, optional) – Over-ride list of items to query

  • exclude_stars (bool,optional) – If the field ‘spectype’ is present and is ‘STAR’, remove those objects from the output catalog.

  • print_query (bool) – Print the SQL query generated

  • zcat_primary_only (bool) – If True, only return objects with zcat_primary=True

Returns:

Catalog of sources returned

Can be empty

Return type:

astropy.table.Table