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SDFITS data file

1. Convert to MS

   Use the AIPS++ utility sdfits2ms to convert from a fits file following the SDFITS convention to an AIPS++ table. The syntax, from the UNIX prompt, is:

   sdfits2ms sdfits_name ms_name, for example:
   
   charybdis<965>$ sdfits2ms n7027.sdfits n7027.ms
   0%....10....20....30....40....50....60....70....80....90....100%
   End Successfully:      34.79 real        5.43 user        5.03 system
   

2. Use the AIPS++ utility fits2table to convert from a binary table following the SDFITS convention to an AIPS++ table. The syntax, from the UNIX prompt, is:

   fits2table input=sdfits_file output=aips2_table [which_hdu=#]
   

   where ``sdfits_file'' is the name of the SDFITS file and ``aips2_table'' is the desired name of the new AIPS++ table created by this step. The third argument, ``which_hdu'', is optional. Use this to specify a specific FITS header data unit (hdu) other than the first one after the primary hdu. For example, if you have a FITS file which has three tables following the primary hdu and the second table is a valid SDFITS table then you would use which_hdu=2 to indicate that that hdu is the one to be converted to the indicated output AIPS++ table.