const char isaac_sp_combine_version[] = "$Revision: 1.6 $";
const char isaac_sp_combine_date[]= "$Date: 2001/09/21 09:23:08 $";
int  isaac_sp_combine_main(void * d);

cmdline_spec isaac_sp_combine_cmd[] = {
	{'o', "output", "Output file", 1, "outfile"},
	{'f', "flatfield", "Flatfield name", 1, "flatname"},
	{'k', "keyword", "Keyword to use", 1, "keyname"},
	{'a', "average", "Ouput average flag", 0, NULL},
	{'d', "difference", "Ouput difference flag", 0, NULL},
    {0, 0, 0, 0, 0}
};

const char isaac_sp_combine_man[]=
"\n"
"NAME\n"
"       sp_combine - combination of spectra\n"
"\n"
"SYNOPSIS\n"
"       sp_combine [options] infiles\n"
"\n"
"DESCRIPTION\n"
"       sp_combine combines a set of spectra images so that in the\n"
"       combined image, all the spectra are superposed at the same\n"
"       position. No distortion correction computed.\n"
"\n"
"ALGORITHM\n"
"       sp_combine expects a list of the  same  star spectra  with\n"
"       two kinds of images: 2 different positions  of the spectra\n"
"       along the slit are allowed. The program  classifies  files\n"
"       in two sets of frames, averages  each  set,  computes  the\n"
"       differences (a-b and b-a) of the two averaged frames, div-\n"
"       ide each result by the flatfield (if available), shift the\n"
"       second image to the first one and add the result to obtain\n"
"       the combined image.\n"
"\n"
"OPTIONS\n"
"       -o or --output outfile\n"
"              outfile is the output files base name\n"
"\n"
"       -a or --average The averaged frames are written in output.\n"
"       If \"output\" is the output base name, output_aver1.fits and\n"
"       output_aver2.fits\n"
"        are the averaged frames.\n"
"\n"
"       -d or --difference The difference images  are  written  in\n"
"       output.   output_diff1.fits  and output_diff2.fits are the\n"
"       image names.\n"
"\n"
"       -f name or --flatfield name The difference is  divided  by\n"
"       the flatfield frame.\n"
"\n"
"       -k  keyword  or --keyname keyword Specify the keyword used\n"
"       to classify the frames. Default keyword is  \"HIERARCH  ESO\n"
"       SEQ CUMOFFSETY\".\n"
"\n"
"FILES\n"
"       The default output name is the basename of the input  file\n"
"       followed  by  \"_comb.fits\".   It is possible to specify an\n"
"       output basename on the command line. All the created files\n"
"       are  FITS  files  whose  header is the same one as for the\n"
"       input files with some more \"PRO\" keywords written.\n"
"\n"
"\n"
"\n";