The Infrared Space Observatory optical subsystem

Details The Infrared Space Observatory optical subsystem The Infrared Space Observatory optical subsystem

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991spie.1494..255s&link_type=abstract

IN: Space astronomical telescopes and instruments; Proceedings of the Meeting, Orlando, FL, Apr. 1-4, 1991 (A92-45151 19-89). Be

Computer Science

Performance

Cryogenic Cooling, Infrared Space Observatory (Iso), Mirrors, Spaceborne Telescopes, Cryogenic Equipment, Focal Plane Devices, Satellite-Borne Instruments, Temperature Compensation, Vibration Damping

Scientific paper

The paper discusses the Infrared Space Observatory (ISO) optical subsystem, a cryogenically cooled telescope featuring main baffle and sunshade. The telescope, a 60-cm Ritchey-Chretien type, focuses the beam to the four scientific instruments located in its focal plane. The extremely low temperature, 1.8 K, is provided by the payload module cryostat, filled with superfluid He. The design of these elements is supported by different mathematical models and by dedicated elementary tests linked to operation in the cryogenic environment. Tests performed at ambient and cryogenic temperatures demonstrate the good behavior of the optical subsystems for thermal, mechanical, and optical performance.

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