Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990dres.iafcq....g&link_type=abstract
IAF, International Astronautical Congress, 41st, Dresden, Federal Republic of Germany, Oct. 6-12, 1990. 6 p.
Astronomy and Astrophysics
Astronomy
Cryogenic Cooling, Infrared Space Observatory (Iso), Space Infrared Telescope Facility, Cryogenic Temperature, Spacecraft Configurations, Spacecraft Environments, Thermal Protection
Scientific paper
Advanced cryogenic infrared (IR) space observatories, such as NASA's Space Infrared Telescope Facility (SIRTF), have a variety of requirements that require resolution at the system level prior to allocation to subsystems. These requirements lead to system issues unique to cryogenic IR observatories. Three of the most important system issues are cryogenic life, optical sensitivity, and pointing and control of the observatory. In addition, the design should include the special demands of integrated observatory testing at cryogenic temperatures. Finally, the observatory must be designed to maintain the exclusion angles of the earth, sun, and moon, and to minimize heat input from the sun and earth. Some key features of each of these system issues are discussed.
Graves Carl D.
Putnam William H.
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