8.5.1 Output Files

  The BOXCAR and GEX programs can all produce output files in FITS format. (Note that the FITS file is optional in BOXCAR, and that BOXCAR can also write a MELO file in RDAF format readable by IUESPEC.) Due to the constraints on file name length imposed by DOS, the following convention has been adopted:

FILENAME   This will be an eight-character string consisting of the camera mnemonic (e.g., SWP) and the image sequence number. For NEWSIPS data the filename will be the same as that for the original SILO file.

EXTENSION   This will be a three character code consisting of:

1. A letter designating the type of data the file contains. For BOXCAR output this will be ``B''; for GEX output this will be ``G''.
2. A number designating the aperture from which the data were extracted:
   0   Unknown aperture.
   1   Large aperture.
   2   Small aperture.
   3   Both apertures.
   
3. A letter designating file format: F for ``FITS'' format.

These files can be read with IFITSRD. For example, suppose we have done small aperture extractions of SWP12345:

BOXCAR extraction:   ifitsrd,'swp12345.b2f',1,h,eh,w,f,q,g,b,n

GEX extraction:   ifitsrd,'swp12345.g2f',1,h,eh,w,f,err,q