SAOimage V1.07 Information and Installation Instructions
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Introduction:

	SAOimage is a stand-alone FITS file viewer and display server for
X11 originally developed by Mike VanHilst of the Harvard Smithsonian Center
for Astrophysics.  It provides interactive contrast/brightness manipulation,
image pan/zoom, and pseudocolor display of images.  In stand-alone mode disk
FITS files can be displayed directly, SAOimage can also be used as a display
server for the IRAF (Image Reduction and Analysis Facility) package or any
other client software using the IIS protocol for remote I/O.

	The current version of SAOimage is being supported by the IRAF Project
at the National Optical Astronomy Observatories (NOAO) in association with
the Smithsonian Astrophysical Observatory (SAO).  The latest releases of the
software (and pre-compiled binaries) can be obtained via anonymous FTP to 
iraf.noao.edu (140.252.1.1), questions or problems can be sent to iraf@noao.edu.
An alternate contact for questions, especially those related use with the 
PROS software, is rsdc@cfa.harvard.edu. 

	Additional information can be found in the original 'readme.txt'
file in the SAOimage source directory.  An (incomplete) revisions history
for the package is kept in the 'update.txt' file also in the source directory.
Bug fixes, enhancements or suggestions should be sent to iraf@noao.edu for
inclusion in future versions.


Installation:

	The installation of SAOimage as a stand-alone product is covered in
the 'readme.txt' file in the source directory.  Installation for use with
IRAF is discussed in the 'readme_iraf.txt' file.  On most supported systems 
the default 'makefile' will figure out the architecture and set things
appropriately.  VMS users should see the 'readme'vms' file in the vms sub-
directory for special instructions.


User documentation:

	Documentation for SAOimage can be found in the 'doc' subdirectory.
The main source of information is the User's Manual, which is provided as
both PostScript and the original LaTex source.  The Unix-style man page is
given as both PostScript and TROFF source.  Various '.txt' files are taken
from sections in the user's manual covering particular topics for quicker
reference. A VMS help file is provided in the 'vms' subdirectory.


Acknowledgements:

	SAOimage originated with showimg under X10.  Showimg was written by
Bill Wyatt, and has continued to be extend under X11 by Doug Mink.  The user
interface ideas for SAOimage were developed in collaboration with Richard
Burg and Eric Mandell.  Jay Travisano did the VMS port and has continued to
support it as SAOimage evolved.  John Roll has put work into the remote IO.
	Rich Burg and Jay Travisano are both with the Space Telescope
Science Institute.  The others mentioned are all with the Harvard
Smithsonian Center for Astrophysics.
	Numerous others have contributed bug fixes, porting information, and
helpful suggestions.  They are credited in the source files where their
contributions appear.
	Mike VanHilst may be contacted at vanhilst@cs.washington.edu or
mvh@cfa.harvard.edu.


Copyright:

	SAOimage is copyrighted by the Smithsonian Institution.  It is
available without charge, as is, to anyone who wishes to use it.  The
Smithsonian takes no responsibility for the appropriateness of the code for
any application, the timeliness of bug fixes, or the continued
compatablility of future versions with any code linked to this program.
	Others are free to use, distribute, add to, or change the code.  In
fact fixes, extensions, and improvements are encouraged.  We would
appreciate donations of such code for inclusion in the generally available
version.
	You may identify yourself with your added code and offer it under
whatever arrangement you choose.   But you must keep the Smithsonian's
copyright on original source code.  You may not represent this program as
anything other than freely available code made available by the Smithsonian
Astrophysical Observatory.