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1 WCSsubs Subroutines
3 These subroutines, developed as part of the WCSTools software package,
4 constitute a self-contained package for accessing the world coordinate
5 systems of FITS or IRAF(.imh) images, with image header I/O contained
6 in fitsfile.c and imhfile.c, and WCS initialization and use through the
7 subroutines in wcs.c. WCS information for an image is kept in a single
8 data structure defined in wcs.h. Pixel to WCS translations are done by
9 calls to pix2wcst() or pix2wcs(). WCS to pixel translations are done
10 by calls to wcs2pix() or wcsc2pix(). The contents of the files are
11 briefly described in Files. Dependencies between these files are given
12 in Makefile. Documentation, to some extent, is online at
16 Documentation for the entire open-source WCSTools package is online at
20 Projection code in wcspos.c is by Bill Cotton of NRAO and is
21 protected by the Gnu Lesser General Public License, which is stated
22 in the file COPYING. Projection code in wcslib.c,
23 cel.c, lin.c, proj.c, wcstrig.c, and sph.c is by Mark Calabretta
24 of CSIRO and is also protected by the Gnu Lesser General Public
25 License. Code in slasubs.c is by Pat Wallace of the Starlink
26 project at Cambridge University. Doug Mink is responsible for
27 the rest of the code, unless otherwise noted in the source file.
28 Unless otherwise noted, this code is Copyright 2003 by the
29 Smithsonian Astrophysical Observatory and protected by the Gnu
30 Lesser General Public License.
32 -Jessica Mink (email@example.com)
33 Telescope Data Center
34 Harvard-Smithsonian Center for Astrophysics
35 Cambridge, Massachusetts