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Proceedings Paper

Cryomechanisms for positioning the optical components of the mid-infrared instrument (MIRI) for NGST
Author(s): Dietrich Lemke; Ulrich Groezinger; Thomas Henning; Ralph Hofferbert; Ralf-Rainer Rohloff; Karl Wagner; Laurent Martin; Gabby Kroes; Gillian S. Wright
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Paper Abstract

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.

Paper Details

Date Published: 5 March 2003
PDF: 12 pages
Proc. SPIE 4850, IR Space Telescopes and Instruments, (5 March 2003); doi: 10.1117/12.461498
Show Author Affiliations
Dietrich Lemke, Max-Planck-Institut fuer Astronomie (Germany)
Ulrich Groezinger, Max-Planck-Institut fuer Astronomie (Germany)
Thomas Henning, Max-Planck-Institut fuer Astronomie (Germany)
Ralph Hofferbert, Max-Planck-Institut fuer Astronomie (Germany)
Ralf-Rainer Rohloff, Max-Planck-Institut fuer Astronomie (Germany)
Karl Wagner, Max-Planck-Institut fuer Astronomie (Germany)
Laurent Martin, Lab. d'Astrophysique de Marseille (France)
Gabby Kroes, ASTRON (Netherlands)
Gillian S. Wright, UK Astronomy Technology Ctr. (United Kingdom)

Published in SPIE Proceedings Vol. 4850:
IR Space Telescopes and Instruments
John C. Mather, Editor(s)

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