I noticed the min-max for for the pixel values on coadds are significantly different than the single visits. How are they rescaled? I saw in Jim’s paper the coadds are computed as a direct weighted average of the resampled CCD images, but didn’t catch anything on how the pixel values are rescaled.
I’m also trying to gain some intuition for the values. For example, for single visit exposures I can convert ADU to electrons per pixel by using the gain. Is there a way to convert the coadd pixel values to electrons or is that not well defined for a coadd?