Thermal emissivity analysis of a GEMINI 8-meter telescopes design

Details Thermal emissivity analysis of a GEMINI 8-meter telescopes design Thermal emissivity analysis of a GEMINI 8-meter telescopes design

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993spie.1753..183s&link_type=abstract

In: Stray radiation in optical systems II; Proceedings of the Meeting, San Diego, CA, July 20-22, 1992 (A93-55176 24-74), p. 183

Physics

Optics

Cassegrain Optics, Focal Plane Devices, Infrared Telescopes, Mirrors, Structural Design Criteria, Thermal Emission, Background Radiation, Chile, Hawaii

Scientific paper

The GEMINI 8-meter Telescopes Project is designing twin 8-meter telescopes to be located in Hawaii and Chile. The GEMINI telescopes will have interchangeable secondary mirrors for use in the visible and IR. The APART/PADE program is being used to evaluate the effective IR emissivity of the IR configuration plus enclosure as a function of mirror contamination at three IR wavelengths. The goal is to design a telescope whose effective IR emissivity is no more than 2 percent when the mirrors are clean.

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