Juan,
While testing out v1.60, I noticed that it is not preserving some key FITS Header information. When creating BIASES, DARKS, and FLATS, it may be a good idea to preserve a little more of the FITS Header information. For example, EXPTIME, EXPOSURE, YBINNING, XBINNING, YPIXSZ, XPIXSZ, SET-TEMP, IMAGETYP. There may be more that should be preserved or recalculated.
Any thoughts?
Wade