imhead is a utility for listing IRAF and FITS image headers. It
converts IRAF .imh image headers to a FITS format before listing them.
For IRAF files, the BITPIX, NAXIS, NAXIS1, NAXIS2, OBJECT, and PIXFILE
keywords are set from the binary portion of the header. IMHFILE is set
from the actual filename for internal purposes.
Command Line Arguments
Name of IRAF image header file or FITS file. This must be present.