Syntax: sss (file with list of Flux-???.fits files)
     or: sss "all" (for all Flux-???.fits in current directory)
  
   Same setup sums: sums up Flux-???.fits with the same
     object name, coordinates, setup angles, etc.  Also
     creates error file corresponding to sum.
     Output:  sss(obs#)-(# summed)_(7 letter RA+DEC)[e].fits