Infrared Space Observatory optical subsystem

Christian Singer; Jean Alain Massoni; Bernard Mossbacher; Ciro Cinotti

doi:10.1117/12.46729

1 September 1991 Infrared Space Observatory optical subsystem

Christian Singer, Jean Alain Massoni, Bernard Mossbacher, Ciro Cinotti

Proceedings Volume 1494, Space Astronomical Telescopes and Instruments; (1991) https://doi.org/10.1117/12.46729
Event: Orlando '91, 1991, Orlando, FL, United States

Abstract

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.

Citation Download Citation

Christian Singer, Jean Alain Massoni, Bernard Mossbacher, and Ciro Cinotti "Infrared Space Observatory optical subsystem", Proc. SPIE 1494, Space Astronomical Telescopes and Instruments, (1 September 1991); https://doi.org/10.1117/12.46729

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