FITSRGB_to_TIFF

       Combine separate red, green, and blue FITS images into TIFF format

       The output TIFF (class R) file can have colors interleaved either
       by pixel or image.  The colour mix is also adjustable.

       FITSRGB_to_TIFF, path, rgb_files, tiff_name [,/BY_PIXEL, /PREVIEW,
                         RED= , GREEN =, BLUE =]

       path = file system directory path to the RGB files required.
       rgb_files = string array with three components - the red FITS file
                   filename, the blue FITS file filename and the green FITS
                   file filename

       tiff_name = string containing name of tiff file to be produced

       Header = String array containing the header from the FITS file.

       BY_PIXEL = This causes TIFF file RGB to be interleaved by pixel
                  rather than the default of by image.
       PREVIEW  = Allows a 24 bit image to be displayed on the screen
                  to check the colour mix.
       RED = Real number containing the fractional mix of red
       GREEN = Real number containing the fractional mix of green
       BLUE = Real number containing the fractional mix of blue

       Read three FITS files, 'red.fits', 'blue.fits' and 'green.fits' from
       the directory '/data/images/space' and output a TIFF file named
       'colour.tiff'
               IDL> FITSRGB_to_TIFF, '/data/images/space', ['red.fits', $
                    'blue.fits', 'green.fits'], 'colour.tiff'
       Read three FITS files, 'red.fits', 'blue.fits' and 'green.fits' from
       the current directory and output a TIFF file named '/images/out.tiff'
       In this case, the red image is twice as strong as the green and the
       blue is a third more intense.  A preview on screen is also wanted.
               IDL> FITSRGB_to_TIFF, '.', ['red.fits', $
                    'blue.fits', 'green.fits'], '/images/out.tiff', $
                    /PREVIEW, RED=0.5, GREEN=1.0, BLUE=0.666

       (1) Limited to the ability of the routine READFITS

       None

     Functions:   READFITS, CONCAT_DIR
     Procedures:  WRITE_TIFF

     16th January 1995 - Written by Carl Shaw, Queen's University Belfast
       27 Jan 1995 - W. Landsman, Add CONCAT_DIR for VMS, Windows compatibility
       Converted to IDL V5.0   W. Landsman   September 1997
    Use WRITE_TIFF instead of obsolete TIFF_WRITE  W. Landsman  December 1998
    Cosmetic changes  W. Landsman    February 2000

[Home Page] [Software, Documentation] [IDL Documentation] [Quick Reference] [Feedback]