NAME

Astro::FITS::Header::CFITSIO - Manipulates FITS headers from a FITS file

SYNOPSIS

use Astro::FITS::Header::CFITSIO;

$header = new Astro::FITS::Header::CFITSIO( Cards => \@array );
$header = new Astro::FITS::Header::CFITSIO( File => $file );
$header = new Astro::FITS::Header::CFITSIO( fitsID => $ifits );

$header->writehdr( File => $file );
$header->writehdr( fitsID => $ifits );

DESCRIPTION

This module makes use of the CFITSIO module to read and write directly to a FITS HDU.

It stores information about a FITS header block in an object. Takes an hash as an arguement, with either an array reference pointing to an array of FITS header cards, or a filename, or (alternatively) and FITS identifier.

REVISION

$Id: CFITSIO.pm,v 1.7 2002/11/27 20:22:41 allan Exp $

METHODS

configure

Reads a FITS header from a FITS HDU

$header->configure( Cards => \@cards );
$header->configure( fitsID => $ifits );
$header->configure( File => $file );
$header->configure( File => $file, ReadOnly => $bool );

Accepts an FITS identifier or a filename. If both fitsID and File keys exist, fitsID key takes priority.

If File is specified, the file is normally opened in ReadWrite mode. The ReadOnly argument takes a boolean value which determines whether the file is opened ReadOnly.

writehdr

Write a FITS header to a FITS file

$header->writehdr( File => $file );
$header->writehdr( fitsID => $ifits );

Its accepts a FITS identifier or a filename. If both fitsID and File keys exist, fitsID key takes priority.

Returns undef on error, true if the header was written successfully.

NOTES

This module requires Pete Ratzlaff's Astro::FITS::CFITSIO module, and William Pence's cfitsio subroutine library (v2.1 or greater).

SEE ALSO

Astro::FITS::Header, Astro::FITS::Header::Item, Astro::FITS::Header::NDF, Astro::FITS::CFITSIO

AUTHORS

Alasdair Allan <aa@astro.ex.ac.uk>,

COPYRIGHT

Copyright (C) 2001-2002 Particle Physics and Astronomy Research Council. All Rights Reserved.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.