Project: datamanagement
Issue DM-5897: Robustify coadd
In running the processing from the Twinkles data challenge in DESC we found that it was very easy to use the wrong skymap when making a coadd. Since the coadd code doesn't even make a cursory check that the coordinate system it is using is the same as that of the coaddTempExps, it is very possible to mess this up. Adding a check that the coadd WCS is that of each input tempCoaddExp is would solve this.
Story points: 2