Name
       3color - 3 color combination

Synopsis
       3color <red> <green> <blue> <outname>

Description
       3color  combines  three  FITS  images  of equal size to a single 24 bit
       image in PPM format. All input files are first scaled to 256 gray  lev-
       els before conversion to a single 24 bit image file.

       Example:
       > 3color h2.fits feII.fits brg.fits orion.ppm

Options
       None

Files
       Input  files  shall  all comply with FITS format. The output file is in
       PPM (Portable PixMap) format, which should be fairly easy to convert to
       any  kind of more convenient image format for export. As PPM images are
       portable, they are bulky and usually not suitable for export.