Physics – Optics
Scientific paper
Oct 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984laus.iafcq....b&link_type=abstract
International Astronautical Federation, International Astronautical Congress, 35th, Lausanne, Switzerland, Oct. 7-13, 1984. 9 p.
Physics
Optics
Cosmology, Infrared Telescopes, Mission Planning, Radiant Cooling, Spaceborne Telescopes, Cassegrain Optics, Cryogenic Cooling, Focal Plane Devices, Orbit Calculation, Structural Design, Temperature Control
Scientific paper
The scientific requirements for a space-based telescope to observed small-scale fluctuations (such as the Sunyaev-Zel'dovich effect in the vicinity of galactic clusters) at wavelengths 0.1-2 mm are examined; existing and planned instruments are evaluated; the orbital parameters of an optimized mission are defined; and a new design is proposed. The result is a 10-m-focal-length Cassegrain telescope with a radiatively cooled 1200-mm-diameter Al primary, small cryogenically cooled focal-plane instruments, and an axially symmetrical thermal and structural design to limit the optics gradients to 30 mK. Drawings, diagrams, graphs, and tables of instrument parameters are provided.
Brudieu Patrice
Forcioli D.
Giraudbit J. N.
Otrio Georges
Tatry B.
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