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.
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