Giovanni Fazio was the Principle Investigator for the Spacelab 2 Infrared Telescope, which flew on the space shuttle Challenger in July 1985. While it had a variety of problems which precluded completing its original mission of mapping the sky in the far infrared, the IRT did map much of the 2 micron sky, and taught several lessons which were useful for the Spitzer Space Telescope. Funding ended before we could calibrate an all-sky 2-micron map.
PDF Poster (unpublished)