Stray light issues for background-limited infrared telescope operation

Details Stray light issues for background-limited infrared telescope operation Stray light issues for background-limited infrared telescope operation

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991spie.1540..109s&link_type=abstract

In: Infrared technology XVII; Proceedings of the Meeting, San Diego, CA, July 22-26, 1991 (A93-38376 15-35), p. 109-118.

Computer Science

Background Noise, Infrared Telescopes, Signal To Noise Ratios, Thermal Emission, Thermal Noise, Antireflection Coatings, Baffles, Equipment Specifications, Infrared Detectors, Temperature Distribution

Scientific paper

Analytical expressions for the photon radiance and its derivative in the spectral band from 400 to 700 microns are presented in a graphic form as a function of temperature for the cryogenic temperatures from 1 to 8 K. The temperature dependence of photon radiance and its derivative have been applied to a background-limited telescope to determine the temperature tolerances. It is concluded that the application of the background-limited telescope operation concept to the telescope operational requirements results in a reduction in the telescope temperature, i.e., an increase in temperatures for the most components, and a prolonged telescope facility lifetime.

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