Thermal Performance of the Cryogenic Telescope Assembly on the Spitzer Space Telescope

Details Thermal Performance of the Cryogenic Telescope Assembly on the Spitzer Space Telescope Thermal Performance of the Cryogenic Telescope Assembly on the Spitzer Space Telescope

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.1109f&link_type=abstract

American Astronomical Society Meeting 204, #11.09; Bulletin of the American Astronomical Society, Vol. 36, p.675

Astronomy and Astrophysics

Astronomy

Scientific paper

NASA's fourth Great Observatory, the Spitzer Space Telescope, has begun to reveal previously unseen features in our universe. The Cryogenic Telescope Assembly is Spitzer's instrument payload and includes the telescope and cryogenic system, which houses the science instruments. The cryogenic system employs a superfluid helium cryostat coupled with a passive radiator system that cools the telescope to less than 5.5°K and provides a 1.2°K cold sink to the science instruments. The cryogenic system was designed with an operational lifetime of 5 years to meet a requirement of 2.5 years. To date, the thermal/cryogenic system is meeting expectations.

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