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: - :class:`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.- ra, dec :