Readme		Readme
	WCSTools 3.8.4		WCSTools 3.8.5
	WCSTools is a set of software utilities, written in C, which create,		WCSTools is a set of software utilities, written in C, which create,
	display and manipulate the world coordinate system of a FITS or IRAF		display and manipulate the world coordinate system of a FITS or IRAF
	image, using specific keywords in the image header which relate pixel		image, using specific keywords in the image header which relate pixel
	position within the image to position on the sky. Auxillary programs		position within the image to position on the sky. Auxillary programs
	search star catalogs and manipulate images.		search star catalogs and manipulate images.
	To make the entire package, type		To make the entire package, type
	make all		make all
	in the main directory or, on Solaris machines		in the main directory or, on Solaris machines
	make -f Makefile.solaris		make -f Makefile.solaris
	This is version 3.8.4 of the WCSTools package developed by Doug Mink		This is version 3.8.5 of the WCSTools package developed by Jessica Mink
	(dmink@cfa.harvard.edu) at the Smithsonian Astrophysical Observatory,		(jmink@cfa.harvard.edu) at the Smithsonian Astrophysical Observatory,
	with significant code or algorithms from		with significant code or algorithms from
	Mark Calabretta of CSIRO (projection),		Mark Calabretta of CSIRO (projection),
	Bill Cotton of NRAO (projection),		Bill Cotton of NRAO (projection),
	Jesse Doggett and Rick White of StScI (DSS projection)		Jesse Doggett and Rick White of StScI (DSS projection)
	Elwood Downey of the University of Iowa (WCS fitting procedure),		Elwood Downey of the University of Iowa (WCS fitting procedure),
	John Roll of SAO (network access),		John Roll of SAO (network access),
	Jing Li of IPAC (SIP distortion),		Jing Li of IPAC (SIP distortion),
	Pat Wallace of Rutherford Appleton Laboratory, UK (coordinate conversion),		Pat Wallace of Rutherford Appleton Laboratory, UK (coordinate conversion),
	Frank Valdes of NOAO (support for NOAO's ZPX projection), and		Frank Valdes of NOAO (support for NOAO's ZPX projection), and
	skipping to change at line 42		skipping to change at line 42
	Marquette of the Institut d'Astrophysique de Paris, and David Shupe of IPAC		Marquette of the Institut d'Astrophysique de Paris, and David Shupe of IPAC
	helped debug the subroutine library.		helped debug the subroutine library.
	Norman Grogin, Scott Kenyon, Susan Tokarz, Dan Koranyi, Guillermo Torres,		Norman Grogin, Scott Kenyon, Susan Tokarz, Dan Koranyi, Guillermo Torres,
	Steve Willner, Gus Muensch, Ed Los and others of the CfA and Andreas Jaunse n		Steve Willner, Gus Muensch, Ed Los and others of the CfA and Andreas Jaunse n
	helped debug the astrometry programs.		helped debug the astrometry programs.
	Sergio Pascual of the Universidad Complutense de Madrid helped me get		Sergio Pascual of the Universidad Complutense de Madrid helped me get
	all of the variables initialized.		all of the variables initialized.
	Details of updates are in the NEWS file, but here is what is new:		Details of updates are in the NEWS file, but here is what is new:
	Version 3.8.4 (September 1, 2011)		Version 3.8.5 (April 12, 2012)
	cphead, keyhead, sethead: Fix overflow bug by increasing size of history fr		getdate: Fix string overflow in ts0 assignment (2012-03-27)
	om 72 to 128		gethead: If length of header/file content string is zero, exit with error
	imgetwcs.c, wcsinit.c, wcs.c, wcs.h, worldpos.c: Add TPV WCS for TAN with P		sumpix: Improve argument parsing so order doesn't matter (2012-02-01)
	V terms		matchstar.c: Fix bug in WCSMatch() which miscomputed means
			fitsfile.c: Always check first 8 characters of FITS files for "SIMPLE"
			imhfile.c: Fix potential overflow in newpixfile assignment (2012-03-27)
			imio.c: Change 8-bit pixel values from char to unsigned char
	Documentation, with examples and installation directions, is on the		Documentation, with examples and installation directions, is on the
	World Wide Web at		World Wide Web at
	http://tdc-www.harvard.edu/software/wcstools/		http://tdc-www.harvard.edu/software/wcstools/
	References		References
	If the WCSTools package has proven useful in your work, please reference		If the WCSTools package has proven useful in your work, please reference
	at least one of the following papers. If you want to find out which is		at least one of the following papers. If you want to find out which is
	most applicable, the full texts are available on the WCSTools web site at		most applicable, the full texts are available on the WCSTools web site at
	http://tdc-www.harvard.edu/software/wcstools/publications/		http://tdc-www.harvard.edu/software/wcstools/publications/
	The paper presented at ADASS in 1996 is the best published description		The paper presented at ADASS in 1996 is the best published description
	of the IMWCS world coordinate system fitting program:		of the IMWCS world coordinate system fitting program:
	"WCSTools: Putting Image World Coordinate Systems to Use",		"WCSTools: Putting Image World Coordinate Systems to Use",
	Douglas J. Mink, 1997, in Astronomical Data Analysis Software and		Douglas J. Mink, 1997, in Astronomical Data Analysis Software and
	Systems VI, A.S.P. Conference Series, Vol. 125, Gareth Hunt and		Systems VI, A.S.P. Conference Series, Vol. 125. Edited by Gareth Hunt
	H. E. Payne, eds., pp. 249-252.		and H. E. Payne.
			San Francisco: Astronomical Society of the Pacific, pp. 249-252.
	The 1998 ADASS paper is the best published description of the other tools		The 1998 ADASS paper is the best published description of the other tools
	in the WCSTools package, including SAOimage when used for WCS work:		in the WCSTools package, including SAOimage when used for WCS work:
	"WCSTools: An Image Astrometry Toolkit",		"WCSTools: An Image Astrometry Toolkit",
	Douglas J. Mink (1998), in Astronomical Data Analysis Software and		Douglas J. Mink, 1999, in Astronomical Data Analysis Software and
	Systems VIII, A.S.P. Conference Series, Vol. 172, 1999, Dave Mehringer		Systems VIII A.S.P. Conference Series, Vol. 172. Edited by Dave
	,		Mehringer, Ray Plante, and Doug Roberts.
	Ray Plante, Doug Roberts, eds., pp. 498-501.		San Francisco: Astronomical Society of the Pacific, pp. 498-501.
	A paper presented at the 2001 ADASS conference describes how the		A paper presented at the 2001 ADASS conference describes how the
	WCSTools package uses the web, among other new features:		WCSTools package uses the web, among other new features:
	"WCSTools 3.0: More Tools for Image Astrometry and Catalog Searching",		"WCSTools 3.0: More Tools for Image Astrometry and Catalog Searching",
	Douglas J. Mink, 2001, to be published in Astronomical Data Analysis		Douglas J. Mink, in Astronomical Data Analysis Software and Systems XI
	Software and Systems XI, whenever it comes out.		,
			A.S.P. Conference Series, Vol. 281, 2002. Edited by David
			Bohlender, Daniel Durand, and T.H. Handley.
			San Francisco: Astronomical Society of the Pacific, pp. 169-172.
	This paper presented at the 2002 ADASS conference describes interesting		This paper presented at the 2002 ADASS conference describes interesting
	ways to use the SCAT program:		ways to use the SCAT program:
	"Federating Catalogs and Interfacing Them with Archives: A VO Prototyp e",		"Federating Catalogs and Interfacing Them with Archives: A VO Prototyp e",
	Douglas J. Mink and Michael J. Kurtz, 2002, to be published in		Douglas J. Mink and Michael J. Kurtz, 2003, in Astronomical Data Analy
	Astronomical Data Analysis Software and Systems XII, whenever it comes		sis
	out.		Software and Systems XII, A.S.P. Conference Proceedings, Vol. 295.
			Edited by Harry Payne, Robert Jedrzejewski, and Richard Hook.
			San Francisco: Astronomical Society of the Pacific, pp. 51-54.
	To assist users in selecting the best catalog to use, we tested the accurac y of		To assist users in selecting the best catalog to use, we tested the accurac y of
	the various catalogs one is likely to use with imwcs, showing how well it w orks		the various catalogs one is likely to use with imwcs, showing how well it w orks
	in a pipeline mode on 1728 images. This ADASS paper is an improved version of		in a pipeline mode on 1728 images. This ADASS paper is an improved version of
	our AAS/DDA paper, adding the UCAC2 catalog and emphasizing usefulness more than		our AAS/DDA paper, adding the UCAC2 catalog and emphasizing usefulness more than
	astrometry:		astrometry:
	"A Comparison of Large All-Sky Catalogs" Douglas J. Mink, Warren R. Br		"A Comparison of Large All-Sky Catalogs",
	own,		Douglas J. Mink, Warren R. Brown, and Michael J. Kurtz, 2004, in
	and Michael J. Kurtz in Astronomical Data Analysis Software and Systems XII		Astronomical Data Analysis Software and Systems XIII, A.S.P. Conferenc
	I,		e
	ASP Conference Proceedings, Vol. 314. Edited by Francois Oschenbein, Mark A		Proceedings, Vol. 314. Edited by Francois Oschenbein, Mark Allen,
	llen,		and Daniel Egret.
	and Daniel Egret. San Francisco: Astronomical Society of the Pacific,		San Francisco: Astronomical Society of the Pacific, pp. 141-144.
	ISSN: 1080-7926, 2004., p. 141.
	Program Descriptions		Program Descriptions
	addpix Add a constant value(s) to specified pixel(s)		addpix Add a constant value(s) to specified pixel(s)
	bincat Bin a catalog into a FITS image in flux or number		bincat Bin a catalog into a FITS image in flux or number
	conpix Operate on all of the pixels of an image		conpix Operate on all of the pixels of an image
	cphead Copy keyword values between FITS or IRAF images		cphead Copy keyword values between FITS or IRAF images
	delhead Delete specified keywords from FITS or IRAF image file heade rs		delhead Delete specified keywords from FITS or IRAF image file heade rs
	delwcs Delete the WCS keywords from an image. If both EPOCH and EQUINOX		delwcs Delete the WCS keywords from an image. If both EPOCH and EQUINOX
	are present, EQUINOX is also deleted.		are present, EQUINOX is also deleted.
	skipping to change at line 158		skipping to change at line 170
	simpos Return RA and Dec for object name (or list of them) using SIMBAD		simpos Return RA and Dec for object name (or list of them) using SIMBAD
	sky2xy Print image pixel coordinates for given sky coordinates on the		sky2xy Print image pixel coordinates for given sky coordinates on the
	command line or in a list file.		command line or in a list file.
	skycoor Convert between J2000, B1950, and Galactic coordinates from the		skycoor Convert between J2000, B1950, and Galactic coordinates from the
	command line or a file.		command line or a file.
	sumpix Total pixel values over an image row or column or a specified area		sumpix Total pixel values over an image row or column or a specified area
	wcshead Print basic world coordinate system information on one line per image		wcshead Print basic world coordinate system information on one line per image
	xy2sky Print sky coordinates for given image pixel coordinates on the comma nd		xy2sky Print sky coordinates for given image pixel coordinates on the comma nd
	line or in a list file.		line or in a list file.
	-Doug Mink, SAO, 2011-09-01		-Jessica Mink, SAO, 2012-04-12
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