Fix Version/s: None
Erin Sheldon reports that SdssCentroid doesn't try very hard close to the edge of an image, just giving up when it's within about a PSF width. That's not unreasonable, given that it uses the PSF model, but we could probably have a better fallback than giving up entirely (with a quality flag, of course).
- relates to
DM-37612 Remove unit tests of deprecated code