imhead
Examples

SIMPLE  =                    T
BITPIX  =                  -32 / IRAF .imh pixel type
NAXIS   =                    2 / IRAF .imh naxis
NAXIS1  =                  263 / IRAF .imh naxis[1]
NAXIS2  =                  288 / IRAF .imh naxis[2]
OBJECT  = 'test image'         / IRAF .imh title
IMHFILE = 'test.imh'           / IRAF header file name
PIXFILE = 'test.pix'           / IRAF .pix pixel file
PIXOFF  =                 1024 / IRAF .pix pixel offset (Do not change!)
IMHVER  =                    1 / IRAF .imh format version (1 or 2)
SWAPIRAF=                    F / IRAF and FITS byte orders differ if T
...
END

SIMPLE  =                    T  /  FITS STANDARD
BITPIX  =                   16  /  FITS BITS/PIXEL
NAXIS   =                    2  /  NUMBER OF AXES
NAXIS1  =                 1024  /
NAXIS2  =                 1024  /
BSCALE  =       1.0000000000E0  /  REAL = TAPE*BSCALE + BZERO
BZERO   =       0.0000000000E0  /
OBJECT  = '16139p3131R'         /
...
END