Wide-field Infrared Survey Explorer cryogenic support system status and thermal test results

Details Wide-field Infrared Survey Explorer cryogenic support system status and thermal test results Wide-field Infrared Survey Explorer cryogenic support system status and thermal test results

Aug 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spie.7439e..32s&link_type=abstract

Astronomical and Space Optical Systems. Edited by Warren, Penny G.; Marshall, Cheryl J.; Tyson, Robert K.; Lloyd-Hart, Michael;

Physics

Optics

1

Scientific paper

The Wide-Field Infrared Survey Explorer (WISE) is a MIDEX mission that is being developed by the Jet Propulsion Laboratory (JPL) to address several of NASA's Astronomical Search of Origins (ASO) objectives. Space Dynamics Laboratory/ Utah State University is providing the cryogenically cooled infrared instrument. Cooling for the instrument optics and focal planes is provided by a dual-stage solid hydrogen cryostat. Driving requirements for the cryogenic subsystem are: a seven-month lifetime and operating temperatures of less than 17 K for the optics, 32 K for the HgCdTe focal planes, and 7.8 K for the Si:As focal planes. This paper provides an overview of the dual-stage hydrogen cryogenic subsystem status and discusses the results of the thermal performance testing.

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