id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
1105	cmf files break FITS standard	Paul Price	eugene	"John Lucey writes:

""Another problem I had was when I try to overlay the objects in
test.CHIP3.cmf on the input image with GAIA. This fails because
according to our local fits expert (Peter Draper) the .cmf breaks the
fits standard. Apparently the primary HDU header should not have various
header cards like NAXIS1=xxxx, etc when NAXIS=0. Apparently there is 
image information when there is no image??? I've no idea whether
this is right or not but Peter is usually right!""

I ran a cmf file through the FITS verifier (http://fits.gsfc.nasa.gov/fits_verify.html), and it produced 4 errors and 1 warning:

*** Warning: Keyword #97, EXTNAME should not be used in a primary array.
*** Error:   Keyword #12, NAXIS1 is duplicated or out of order.
*** Error:   Keyword #12, NAXIS1 is not allowed (with n > NAXIS =0).
*** Error:   Keyword #13, NAXIS2 is duplicated or out of order.
*** Error:   Keyword #13, NAXIS2 is not allowed (with n > NAXIS =0).

[...]

 HDU#  Name (version)       Type             Warnings  Errors
 1                          Primary Array    1         4     
 2     SkyChip.psf          Binary Table     0         0     



Breaking the FITS standard prevents other tools from working on our data."	defect	closed	high		psphot	unspecified	major	fixed