Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990cryo...30..480d&link_type=abstract
(International Cryogenic Engineering Committee, International Institute of Refrigeration, Chinese Association of Refrigeration,
Astronomy and Astrophysics
Astronomy
Cameras, Cryostats, Infrared Photography, Infrared Space Observatory (Iso), Spacecraft Equipment, Cryogenics, Design Analysis, Thermal Analysis
Scientific paper
Upon launch in 1993, the IR Space Observatory's 'ISOCAM' IR camera experiment will collect 2.5-5.5 and 4-17 micron astronomical data over an 18-month lifetime. On the basis of an open loop of superfluid He, ISOCAM's detectors, stepping motors, wheels, mechanisms, filters, lenses and primary mirror will all be cooled. The primary system design difficulties were encountered in the securing of low temperature stability for the detectors, as well as in the thermal control of high-inertia elements, and the cryogenic testing of the camera under spacelike conditions. Additional challenges were met in the development of such cryomechanical elements as stepping motors, ball bearings, and gears.
de Sa L.
Taride S.
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