NAME

       Fits - view and manipulate FITS headers

SYNOPSIS

       astfits [OPTION...] ASTRdata

DESCRIPTION

       Fits is part of GNU Astronomy Utilities 0.5.  Fits allows you to view and manipulate (add,
       delete, or modify)  FITS  extensions  (or  HDUs)  and  FITS  header  keywords  within  one
       extension.

       For  more  information, please run any of the following commands. In particular the second
       contains a  very  comprehensive  explanation  of  Fits's  invocation:  expected  input(s),
       output(s), and a full description of all the options.

       All options and their values:
              $ astfits -P

       Inputs/Outputs and options:
              $ info astfits

       Full section in manual/book:
              $ info Fits

       Full Gnuastro manual/book:
              $ info gnuastro

       If  you  couldn't find your answer in the manual, you can get direct help from experienced
       Gnuastro users and developers. For more information, please run:

              $ info help-gnuastro

       Fits options:

              Input:

       -h, --hdu=STR/INT
              Extension name or number of input data.

              Output:

       -K, --keepinputdir
              Keep input directory for automatic output.

       -o, --output=STR
              Output file name (only for writing HDUs).

              HDUs (extensions):

       -C, --copy=STR
              Copy extension to output file.

       -k, --cut=STR
              Copy extension to output and remove from input.

       -R, --remove=STR
              Remove extension from input file.

              Keywords (in one HDU):

       -a, --asis=STR
              Write the argument string as is into the header.

       -c, --comment=STR
              Add COMMENT keyword, any length is ok.

       -d, --delete=STR
              Delete a keyword from the header.

       -H, --history=STR
              Add HISTORY keyword, any length is ok.

       -p, --printallkeys
              Print all keywords in the selected HDU.

       -r, --rename=STR
              Rename keyword, keeping value and comments.

       -t, --date
              Set the DATE keyword to the current time.

       -u, --update=STR
              Update a keyword value or comments.

       -w, --write=STR
              Write a keyword (with value, comments and units).

              Operating modes:

       -?, --help
              give this help list

       --cite BibTeX citation for this program.

       --config=STR
              Read configuration file STR immediately.

       --lastconfig
              Do not parse any more configuration files.

       --onlyversion=STR
              Only run if the program version is STR.

       -P, --printparams
              Print parameter values to be used and abort.

       -q, --quiet
              Only report errors, remain quiet about steps.

       -Q, --quitonerror
              Quit if there is an error on any action.

       -S, --setdirconf
              Set default values for this directory and abort.

       --usage
              give a short usage message

       -U, --setusrconf
              Set default values for this user and abort.

       -V, --version
              print program version

       Mandatory or optional arguments to long options are also mandatory  or  optional  for  any
       corresponding short options.

       GNU Astronomy Utilities home page: http://www.gnu.org/software/gnuastro/

REPORTING BUGS

       Report bugs to bug-gnuastro@gnu.org.

COPYRIGHT

       Copyright  © 2015-2017, Free Software Foundation, Inc.  License GPLv3+: GNU General public
       license version 3 or later.
       This is free software: you are free to change and redistribute it.  There is NO  WARRANTY,
       to the extent permitted by law.

       Written/developed by Mohammad Akhlaghi

SEE ALSO

       The  full  documentation for Fits is maintained as a Texinfo manual.  If the info and Fits
       programs are properly installed at your site, the command

              info Fits

       should give you access to the complete manual.