Astronomy Inc. The IRAF software is publicly available, but is NOT in the public domain. The difference is that copyrights granting rights for unrestricted use and redistribution have been placed on all of the software to identify its authors. You are allowed and encouraged to take this software and use it as you wish, subject to the restrictions outlined below. NOAO makes no representations about the suitability of this software for any purpose. The current version of IRAF varies a bit with the platform.
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The X11IRAF project is being developed independently of the normal IRAF system development. They are X based tools for support of vector graphics and image display, the long awaited replacements for Xterm and SAOimage . All tasks are now fully documented and easily buildable from source on all supported iraf platforms. A bug-fix release was made available in Aug 97, most users should upgrade to this version. Minor upgrades to the OS do not normally affect the operation of IRAF , but major changes to the OS may.