Radiatively cooled telescopes - A new direction for infrared space astronomy

Details Radiatively cooled telescopes - A new direction for infrared space astronomy Radiatively cooled telescopes - A new direction for infrared space astronomy

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991acaau..25..223d&link_type=abstract

Acta Astronautica (ISSN 0094-5765), vol. 25, April 1991, p. 223-228.

Astronomy and Astrophysics

Astronomy

1

Infrared Astronomy, Infrared Telescopes, Radiant Cooling, Spaceborne Astronomy, Launch Vehicles, Moon, Orbit Calculation, Payloads

Scientific paper

It is suggested that, for a given launch vehicle or project funding pool, prospective radiatively cooled IR telescopes outperform cryogenically cooled telescopes for large-aperture, long service-life systems. Radiatively cooled telescopes may be able to reach temperatures sufficiently low to be limited only by detector noise or the astronomical background, in the wavelength region below 30 microns. A representative concept is the 900-kg payload-constituting Passively-cooled Orbiting IR Observatory Telescope, which would be able to operate at 40 K when launched into a 1000 x 70,000 km, 24-hr orbit.

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