gtsubim
             Get subimages from FITS files
  
 usage:     gtsubim -f input_param_file
            gtsubim fits_in fits_out hh mm ss.s
                             +-dd mm ss.s siz_ra siz_de [-p]
  
  -f        Name of the input parameters file 
  -h        This help
  -p        RA and DEC size are in pixel
  
 fits_in    Input fits image file name
 fits_out   Output fits (sub)image file name
 hh mm ss.s RA coordinates (also in deg.nnn)
 dd mm ss.s DEC coordinates (also in deg.nnn)
 siz_ra     RA size of subimage (in arcmin) 
 siz_de     DEC size of subimage (in arcmin) 
  
 Format of  input_param_file : 
 fits_in fits_out hh mm ss.s +-dd mm ss.s siz_ra siz_de  [-p]
   
   ....... for every file to process