Hardware Results for the Wide-field Infrared Survey Explorer (WISE) Telescope, Scanner, and Imaging Optics

Details Hardware Results for the Wide-field Infrared Survey Explorer (WISE) Telescope, Scanner, and Imaging Optics Hardware Results for the Wide-field Infrared Survey Explorer (WISE) Telescope, Scanner, and Imaging Optics

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21345914s&link_type=abstract

American Astronomical Society, AAS Meeting #213, #459.14; Bulletin of the American Astronomical Society, Vol. 41, p.366

Physics

Optics

Scientific paper

In 2008 L-3 Communications SSG-Tinsley completed alignment, testing, and delivery of the scanner, telescope, and aft imaging optical system for the Wide-field Infrared Survey Explorer (WISE). Hardware and test results are presented. WISE is a NASA MIDEX mission within the Explorers Program that will perform an all-sky survey in four infrared bands. L-3 SSG, under contract to the Space Dynamics Laboratory, provided a 40 cm afocal telescope, a scan mirror for back-scan during integration, and aft optics imager assembly. All modules operate below 17 Kelvin. The all-reflective system uses aluminum mirrors and metering structures. The afocal telescope provides distortion control to better than two parts in a thousand to prevent image blur during internal scanning. The one-axis scan mirror at the exit pupil scans the detectors’ field-of-view across the telescope field-of-regard, countering the orbital motion and freezing the line of sight during the multi-second exposure period. The five-mirror imaging optics module follows the scan mirror and feeds dichroic beamsplitters that separate the energy into four channels between 2.8 and 26 microns. Design, manufacturing, and test were completed successfully and the subsystems have been delivered for higher level integration and test.

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