sdss_sweep_circle¶

pydl.pydlutils.sdss.sdss_sweep_circle(ra, dec, radius, stype='star', allobj=False)[source]¶

Read the SDSS datasweep files and return objects around a location.

Parameters:

ra, dec : float

The sky location to search, J2000 degrees.

radius : float

The radius around ra, dec to search.

stype : str, optional

The type of object to search, ‘star’, ‘gal’ or ‘sky’. The default is ‘star’.

allobj : bool, optional

If set to True, return all objects found, not just SURVEY_PRIMARY.

Returns:

numpy.ndarray

The data extracted from the sweep files.

Raises:

:exc:`PydlutilsException`

If PHOTO_SWEEP is not set.

Notes

Assumes that the sweep files exist in PHOTO_SWEEP and that index files have been created.