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Loading contentThe Image Reduction and Analysis Facility, a classic suite for the reduction and analysis of astronomical images and spectra developed at the US national optical observatory. Once ubiquitous in professional astronomy, it is no longer actively developed by the observatory but is maintained by the community, and much of its role has passed to the Python ecosystem.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.