NAME

       dfits - display FITS file header information

SYNOPSIS

       dfits [-x xtnum] <list>
       dfits [-x xtnum] -

DESCRIPTION

       dfits  displays FITS header informations on stdout. Header information can be found in the
       main header only (default), in extensions, or in both.  See the -x  option  below.   dfits
       accepts  multi-file  input.   'dfits -' expects single file data coming from stdin.  dfits
       also accepts now 'HDR' files. These are identified from the fact that they contain a  line
       feed in one of the 80 first characters.

OPTIONS

       -x xtnum
              Specifies  the  extension to print out. Extensions are numbered starting from 1. If
              this option is not specified, only the main header is printed out. If  this  option
              specifies an extension that does not exist, nothing is printed out.
              Specify  0 as extension number to get a print of the main header plus all extension
              headers.

       Examples :
       dfits *.fits
       dfits *.fits | grep NAXIS3
       gzip -d < star.fits.gz | dfits - | more
       dfits -x 0 *.fits
       dfits -x 3 *.fits

SEE ALSO

       fitsort can be combined with dfits output to sort out keyword values of a  group  of  FITS
       files.

FILES

       Files shall all comply with FITS format

                                           30 Mar 2000                                   dfits(1)