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Image reduction and Analysis Facility

Version : 2.12
Author(s) : Various
License : AURA
Website :

Disk space required for installation is 313.40 Mb

A shortcut will be installed in the KDE/GNOME desktop menu system,
as an entry in the Astronomy submenu


IRAF is the Image Reduction and Analysis Facility, a general purpose software system for the reduction and analysis of
astronomical data. IRAF is written and supported by the IRAF programming group at the National Optical Astronomy Observatories (NOAO) in Tucson, Arizona.
NOAO is operated by the Association of Universities for Research in Astronomy (AURA), Inc. under cooperative agreement with the National Science Foundatio

IRAF is the "Image Reduction and Analysis Facility". The main IRAF distribution includes a good selection of programs for general image processing and graphics,
plus a large number of programs for the reduction and analysis of optical and IR astronomy data (the "noao" packages). Other external or layered packages are
available for applications such as data acquisition or handling data from other observatories and wavelength regimes such as the Hubble Space Telescope (optical),
EUVE (extreme ultra-violet), or ROSAT and AXAF (X-ray). These external packages are distributed separately from the main IRAF distribution but can be easily
installed. The IRAF system also includes a complete programming environment for scientific applications, which includes a programmable Command Language
scripting facility, the IMFORT Fortran/C programming interface, and the full SPP/VOS programming environment in which the portable IRAF system and all
applications are written.

IRAF is freely available on all platforms via anonymous ftp to our server at or for a small cost it may be ordered on tape or CD-ROM. If you are unsure
about whether IRAF can help you, we have a FAQ (frequently-asked questions list) to answer this particular question.

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