Dear all,

I ran a draft SDFITS-format file through the FITS File Verifier at
http://fits.gsfc.nasa.gov/fits_verify.html and I got errors for having
CTYPE1 ... CTYPE4 in the extension header. If I have understood the
SDFITS convention, then it is allowed to have CTYPEx as a header keyword
while the corresponding CRVALx and CRPIXx are column names. So who is
right?

My file is accepted by ASAP so I'm not too worried. I'm just curious.

Regards

Tom