The Gemini IRAF package is an external package layered upon IRAF. Therefore sites that wish to use the Gemini IRAF package must first install IRAF. The released version 1.9.1 has been tested under, and requires, IRAF version 2.12.2a or later. It is recommended that user upgrade their system to IRAF 2.14. The Gemini IRAF package will not work properly under any earlier versions of IRAF.

The released version 1.9.1 requires the August 2005 version of the external package FITSUTIL which is available from the IRAF website (iraf.noao.edu). All users are encouraged to upgrade to the Gemini IRAF package version 1.9.1.

The Gemini IRAF package requires that a number of other external IRAF packages are installed at the user's site. The Gemini IRAF package will not load if any of these packages are missing. These packages are listed in the table below. The packages "nmisc", "gmisc", "fitsutil" and "color" are available from the NOAO/IRAF ftp site in the directory containing external packages, and at sites that mirror the NOAO/IRAF ftp site. The "stsdas" and "tables" packages are available from the Space Telescope Science Data Analysis System.

It is also required that one of the following image display tools is available: ximtool, SAOimage, SAOtng or ds9.

The Gemini IRAF package v1.9.1 has been tested on Sun Ultra Workstations running Solaris 5.7, and Solaris 5.8, on PCs running Linux Redhat 9.0, Redhat Entreprise 5, and Fedora Core 4, and on Mac OS X 10.4.x (PowerPC, Intel). The Gemini IRAF package is distributed with binaries for Solaris 5.7/5.8, Linux Redhat 9.0/Fedora Core 4, and Mac OS X 10.4 (PowerPC). For other architectures the package has to be compiled. See the installation instructions for details.