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Proceedings Paper

Mechanical design of the Crosstrack Infrared Sounder (CrIS)
Author(s): Richard J. Kohrman; Scott D. Luce
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Paper Abstract

The mechanical design characteristics of the CrIS sensor module is presented. Several structural and thermal challenges are addressed. An 8-cm optical system, which includes a scanner, interferometer, 25-cm focal length telescope, aft optics, and cooler, efficiently use the available volume (0.158 m3). The sensor manages 90 Watts of electronic dissipation while maintaining a stable radiometric environment. It uses multi-stage passive cooling to provide 81 K focal plane and 220 K aft optics temperatures for low-earth orbits at up to 90-degree orbit normal-to-sun angles. Structurally, the interferometer scanning mirror maintains pointing accuracy of less than 20 microradians in the presence of self-induced and external disturbances.

Paper Details

Date Published: 8 February 2002
PDF: 11 pages
Proc. SPIE 4486, Infrared Spaceborne Remote Sensing IX, (8 February 2002); doi: 10.1117/12.455127
Show Author Affiliations
Richard J. Kohrman, ITT Industries, Inc. (United States)
Scott D. Luce, ITT Industries, Inc. (United States)

Published in SPIE Proceedings Vol. 4486:
Infrared Spaceborne Remote Sensing IX
Marija Strojnik; Bjorn F. Andresen, Editor(s)

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