XJET IMAGE DESCRIPTOR DOCUMENT
        - (filename should be identical to image except for .fits -> .txt)
cut here
FILENAME:		m87_hst_f555w.fits                    # src-detector-freq-date
SOURCE:		M87
IMAGE NAME:		M87 HST F555W                       # concise label for thumbnail
OBSCODE:		U2CK0D02T.D0F                         # seq.#, obsid, or other useful

 
FILETYPE:		fits primary array              # change to 'uv' or 'events' if
ARRAY SIZE:		800	                        # single entry denotes a square
PIXEL SIZE:		0.0455                          # in arcsec
 
 
DETECTOR:		HST/WFPC-2(PC)                   # include telescope e.g.
FREQUENCY:		5.41e14 Hz (555 nm)
OBSDATE:		1995Feb04                           # we prefer YYYYmmmdd, e.g.
OBSTIME:		2400s                               # append 's', 'm', or whatever
BEAMSIZE:                                       # arcsec: restoring beam for
 
ORIG. PI:		Sparks
CONTRIB. by:	E. Perlman
PUB-REF:		Perlman et al. 1999, AJ 117, 2185 # reference to relevent
 
 
COMMENTS: (describe any other helpful details about the image)
NB: This image does not have North up.  It is also not registered with respect
to accurate radio maps (DEH, 2002aug08).