output headers for pswarp (cmf and image) are poorly constructed

[eugene]

Created an attachment (id=120)
example output pswarp fits image header

There are a variety of problems with the output cmf and image headers from pswarp, at least for the simulation suite. Attached are an example image header and example cmf header from a simtest warp run.

The output headers for the cmf files from pswarp are missing various metadata present in the output headers of the image file. A few problems with the output cmf header:

• missing NAXIS1,NAXIS2 (these are not present even before the call to psFitsWriteBlank).

• missing astrometry WCS keywords (present in image output header)

• output TRIMSEC is nan:nan,nan:nan

In addition, both cmf and image headers suffer from the following problems:

• basic header keywords are kept in the HIERARCH format, and are thus not compatible with the source camera format.

• output BIASSEC is not set

[eugene]

example output pswarp fits image header

[eugene]

output pswarp sample cmf header

[eugene]

input image header

[Paul Price]

The first three may be the result of recent changes to how files are written. I will investigate.

The last two (HIERARCH and BIASSEC) have always been the case:

• The "_SIMTEST-SKYCELL" camera (derived from SIMTEST) uses a format that puts every concept into the header, with a keyword named after itself. Since DVO cannot read HIERARCH, a subset of concepts (listed in SKYCELLS in the system configuration) have their names changed.
• The images have no bias section, hence it is not set.