NAME

Astro::FITS::HdrTrans::UKIRTOld - Base class for translation of old UKIRT instruments

SYNOPSIS

  use Astro::FITS::HdrTrans::UKIRTOld;

DESCRIPTION

This class provides a generic set of translations that are common to CGS4 and IRCAM from the United Kingdom Infrared Telescope. It should not be used directly for translation of instrument FITS headers.

COMPLEX CONVERSIONS

These methods are more complicated than a simple mapping. We have to provide both from- and to-FITS conversions. All these routines are methods and the to_ routines all take a reference to a hash and return the translated value (a many-to-one mapping). The from_ methods take a reference to a generic hash and return a translated hash (sometimes these are many-to-many).

to_UTDATE

Converts IDATE into UTDATE without any modification. Flattens duplicate headers into a single header.

from_UTDATE

Converts UTDATE into IDATE without any modification.

to_UTSTART

Converts FITS header UT date/time values for the start of the observation into a Time::Piece object.

from_UTSTART

Converts a Time::Piece object into two FITS headers for IRCAM: IDATE (in the format YYYYMMDD) and RUTSTART (decimal hours).

to_UTEND

Converts FITS header UT date/time values for the end of the observation into a Time::Piece object.

from_UTEND

Converts a Time::Piece object into two FITS headers for IRCAM: IDATE (in the format YYYYMMDD) and RUTEND (decimal hours).

to_INST_DHS

Sets the instrument data handling system header. Note that for old instruments there is no DHSVER header so this simply returns the name of the instrument and a UKDHS suffix.

REVISION

 $Id$

SEE ALSO

Astro::FITS::HdrTrans, Astro::FITS::HdrTrans::UKIRT

AUTHOR

Brad Cavanagh <b.cavanagh@jach.hawaii.edu>, Tim Jenness <t.jenness@jach.hawaii.edu>.

COPYRIGHT

Copyright (C) 2007-2008 Science and Technology Facilities Council. Copyright (C) 2003-2007 Particle Physics and Astronomy Research Council. All Rights Reserved.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either Version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.