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MISR Instrument Cryo/Thermal Design

the Multiangle Imaging SpectroRadiometer (MISR) -- is designed to image Earth simultaneously at 9 different angles in each of 4 color bands. Its mission is to assess elements of Earth's environment that scatter sunlight differently at different angles: clouds, the surface, and particles floating in the air (aerosols). MISR was built for NASA by JPL and is part of NASA's Terra spacecraft that was launched into polar orbit from Vandenberg Air Force Base in December 1999.

The cryo/thermal design of the MISR instrument involves the precise temperature control of the nine cameras, each cooled to approximately 268 0.1 K via thermoelectric coolers, as well as the control of the temperature of a large complement of electronics and mechanisms.

 

 
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