Computer Science – Performance
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993adspr..13..531t&link_type=abstract
Advances in Space Research (ISSN 0273-1177), vol. 13, no. 12, p. (12)531-(12)534
Computer Science
Performance
Design Analysis, Heat Radiators, Infrared Astronomy, Performance Prediction, Satellite Temperature, Satellite-Borne Instruments, Spaceborne Telescopes, Ariane Launch Vehicle, Atlas Launch Vehicles, Background Radiation, Cryogenic Equipment
Scientific paper
Radiative cooling of IR space telescopes is an alternative to embedding within massive cryostats and should offer advantages for future missions, including longer life, larger aperture for a fixed spacecraft size, lower cost due to less complex engineering, and easier ground handling. Relatively simple analyses of conventional designs show that it is possible to achieve telescope temperatures in the range of 25 to 40 K at distances from the sun of about 1 AU. Lower temperatures may be possible with 'open' designs or distant orbits. At approximately 25 K, an observatory will be limited by the celestial thermal background in the near- and mid-IR and by the confusion limit in the far-IR. We outline here our concept for a moderate aperture (approximately 1.75 m; Ariane 4 or Atlas launch) international space observatory for the next decade.
Bally John
Bell Burnell Jocelyn S.
Hawarden Tim G.
Penny Alan J.
Rapp Donald
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