Generate a list of Footprints of sky objects
Sky objects don't overlap with other objects. This is determined
through the provided `mask` (in which objects are typically flagged
as `DETECTED`).
The algorithm for determining sky objects is random trial and error:
we try up to `nTrialSkySources` random positions to find `nSources`
sky objects.
Parameters
----------
mask : `lsst.afw.image.Mask`
Input mask plane, which identifies pixels to avoid for the sky
objects.
seed : `int`
Random number generator seed.
config : `SkyObjectsConfig`
Configuration for finding sky objects.
Returns
-------
skyFootprints : `list` of `lsst.afw.detection.Footprint`
Footprints of sky objects. Each will have a peak at the center
of the sky object.
Definition at line 29 of file skyObjects.py.