.TH fitstopgm 1 "20 September 89"
.IX fitstopgm
.SH NAME
fitstopgm - convert a FITS file into a portable graymap
.SH SYNOPSIS
.B fitstopgm
.RB [ -image
.IR N ]
.RI [ FITSfile ]
.SH DESCRIPTION
Reads a FITS file as input.
.IX FITS
Produces a portable graymap as output.
The results may need to be flipped top for bottom; if so, just
pipe the output through
.B pnmflip -tb.
.IX pnmflip
.SH OPTIONS
.PP
The
.B -image
option is for FITS files with three axes.
The assumption is that the third axis is for multiple images,
and this option lets you select which one you want.
.PP
All flags can be abbreviated to their shortest unique prefix.
.SH REFERENCES
FITS stands for Flexible Image Transport System.  A full description
can be found in Astronomy & Astrophysics Supplement Series 44 (1981),
page 363.
.SH "SEE ALSO"
pgmtofits(1), pgm(5), pnmflip(1)
.SH AUTHOR
Copyright (C) 1989 by Jef Poskanzer.
.\" Permission to use, copy, modify, and distribute this software and its
.\" documentation for any purpose and without fee is hereby granted, provided
.\" that the above copyright notice appear in all copies and that both that
.\" copyright notice and this permission notice appear in supporting
.\" documentation.  This software is provided "as is" without express or
.\" implied warranty.