Lately, there has been a visit to the underlying class that represents an image loaded from a FITS file. The two classes used are Image and Exposure, with Image (raw FITS) objects missing the metadata, which includes WCS info among others. From
DM-13412, it turns out that the underlying image object is NOT of the Exposure type after all, as exposed by the unit test testGetDR7() in obs_sdss.
Per KT, we should investigate the issue and "properly standardize to an Exposure."