Overview: The Two Micron All-Sky Survey (2MASS) is a near-infrared digital imaging survey of the entire sky conducted by the University of Massachusetts and IPAC at 1.25, 1.65 and 2.17 microns. A pair of matched 1.3-m diameter telescopes (Arizona and Chile) completed survey operations in early 2001. Data processing and product development continued through 2003. Key science goals of the survey include the large-scale structure of the Milky Way and the Local Universe, an accurate census of stars in the solar neighborhood, and the discovery of new brown dwarfs and active galactic nuclei.

The Infrared Processing and Analysis Center (IPAC) was responsible for all data processing through the Production Pipeline, and construction and distribution of the data products.