This is not a fits file.

[ijiraq]

caom2tools/caom2utils/caom2utils/fits2caom2.py

Line 3724 in 8886a86

def _get_headers_from_fits(path):

the file that is being sent to this method is sometimes not a FITS file but a plant text file that contains header keywords. This method could use: fits.Header.fromtextfile() instead of fits.open() in those cases.

@SharonGoliath noticed this issue when dealing with NGVS data. Perhaps a try/except is the best solution?

try:
   fits.open(xxxxx)
except OSError as ex:
   fits.Header.fromtextfile(xxxx)