If I create master bias and darks from raw frames taken with MaxIm DL v6.08 using the ImageIntergration Process and save them in the XISF format, key FITS items are left out of the FITS header such as DATE-OBS, EXPTIME, CCD-TEMP, XBINNING, YBINNING, READOUTM, IMAGETYP, etc.
When these masters are loaded into the BatchPreprocessing Script, they are mis-identified as to their binning and exposure times making them useable as calibration files.
I hope I don't have to manually enter all these Keywords and Values.
Joe Morris