Cryomechanisms for positioning the optical components of the mid-infrared instrument (MIRI) for NGST

Details Cryomechanisms for positioning the optical components of the mid-infrared instrument (MIRI) for NGST Cryomechanisms for positioning the optical components of the mid-infrared instrument (MIRI) for NGST

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4850..544l&link_type=abstract

IR Space Telescopes and Instruments. Edited by John C. Mather . Proceedings of the SPIE, Volume 4850, pp. 544-555 (2003).

Mathematics

Scientific paper

Mechanisms operating in the cryovacuum are required to rotate filter and dichroic wheels, to tilt gratings and to flip in the beam of an internal calibration source. The design proposed here is based on similar mechanisms flown successfully on the liquid helium cooled European ISO-satellite and being presently under qualification for ESA's cooled HERSCHEL-satellite. Their main characteristics are high reliability during the 10 year lifetime in space, high precision and low heat dissipation in the cryovacuum.

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