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Proceedings Paper

Wide-field Infrared Survey Explorer cryogenic support system lessons learned
Author(s): Brett Lloyd; Brian Thompson; Scott Schick
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Paper Abstract

The Wide-Field Infrared Survey Explorer (WISE) is a JPL-managed MIDEX mission to perform an infrared all-sky survey. The WISE instrument, developed by the Space Dynamics Laboratory (SDL), is a 40-cm cryogenically-cooled telescope which includes a cryogenic scan mirror and four infrared focal planes (2-HgCdTe, 2-Si:As). Cooling the instrument to the desired temperatures is accomplished by a two-stage, solid hydrogen cryostat, provided by Lockheed Martin Advanced Technology Center (LMATC). Required temperatures for the instrument optics and Si:As focal planes are <13 K and <7.6 K respectively. To reduce heat loads, the vacuum shell is isolated from the spacecraft bus via composite struts and radiatively cooled to <200 K. The telescope aperture is protected from on-orbit environmental loads via a two-stage radiatively cooled aperture shade. WISE was successfully launched into a 530 km, polar orbit on December 14, 2009, beginning a 10-month mission to survey the entire sky in the infrared.

Paper Details

Date Published: 7 September 2010
PDF: 9 pages
Proc. SPIE 7796, An Optical Believe It or Not: Key Lessons Learned II, 77960C (7 September 2010); doi: 10.1117/12.864355
Show Author Affiliations
Brett Lloyd, Space Dynamics Lab. (United States)
Brian Thompson, Space Dynamics Lab. (United States)
Scott Schick, Practical Technology Solutions, Inc. (United States)

Published in SPIE Proceedings Vol. 7796:
An Optical Believe It or Not: Key Lessons Learned II
Mark A. Kahan, Editor(s)

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