NAME

       st4topgm - convert an SBIG ST-4 camera file to PGM

SYNOPSIS

       st4topgm

       [st4file]

DESCRIPTION

       This program is part of Netpbm(1).

       st4topgm  reads  an  image  file in the native format used by the Santa Barbara Instrument
       Group (SBIG) ST-4 astronomical CCD cameras, and produces a  PGM  image  as  output.   This
       format  is  not  to be confused with the format most other SBIG cameras use, for which you
       can use sbigtopgm.

       Additional information on SBIG cameras and documentation of the file format  is  available
       at the Web site, http://www.sbig.com/ ⟨http://www.sbig.com/⟩ .

OPTIONS

       There are no command line options defined specifically for st4topgm, but it recognizes the
       options common to all programs based on libnetpbm (See
        Common Options ⟨index.html#commonoptions⟩ .)

SEE ALSO

       pgmtost4(1) sbigtopgm(1) pgm(1)

HISTORY

       Bryan Henderson wrote st4topgm for Sourceforge Netpbm in January 2015.  However, there has
       been  another  program  by  the same name for the same purpose since December 2003, in the
       Debian version of Netpbm.  It was written by Justin Pryzby <justinpryzby@users.sf.net>.

       Bryan discovered the Debian version when Prophet of the Way did a comparison  of  the  two
       Netpbms  in  January  2015.   It was the only program that the Debian version had that the
       Netpbm version did not (not counting one that really didn't  belong  in  any  Netpbm),  so
       Bryan  decided  to  add  it.   Because  it  was  a small program, Bryan decided to write a
       replacement in the Netpbm coding style rather than just  copy  Pryzby's  code,  but  Bryan
       endeavoured to keep the same function.

DOCUMENT SOURCE

       This  manual page was generated by the Netpbm tool 'makeman' from HTML source.  The master
       documentation is at

              http://netpbm.sourceforge.net/doc/st4topgm.html