Computer Science – Performance
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21345902l&link_type=abstract
American Astronomical Society, AAS Meeting #213, #459.02; Bulletin of the American Astronomical Society, Vol. 41, p.363
Computer Science
Performance
Scientific paper
The Wide Field Infrared Survey Explorer is a NASA Medium Class Explorer mission to perform a high-sensitivity, high resolution, all-sky survey in four infrared wavelength bands. The science payload is a 40 cm aperture cryogenically cooled infrared telescope with four 10242 infrared focal plane arrays covering from 2.8 to 26 µm. Mercury cadmium telluride (MCT) detectors are used for the 3.3 µm and 4.6 µm channels, and Si:As detectors are used for the 12 µm and 23 µm wavelength channels. A cryogenic scan mirror freezes the field of view on the sky over the 9.9-second frame integration time. A two-stage solid hydrogen cryostat provides cooling to temperatures less than 17 K and 8.3 K at the telescope and Si:As focal planes, respectively. The science payload collects continuous data on orbit for the seven-month baseline mission with a goal to support a year-long mission. As of the writing of this paper, the payload subassemblies are complete and have been fully integrated. The integrated payload is now undergoing environmental testing and performance characterization. This poster provides a payload overview and discusses instrument status and preliminary test results.
Cardon Joel
Drake Jeremy J.
Elwell John
Larsen Kasper
Larsen Mark
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