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Proceedings Paper

Cryogenic actuators in ground-based astronomical instrumentation
Author(s): Ralf-Rainer Rohloff; Harald Baumeister; Monica Ebert; Norbert Munch; Vianak Naranjo
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Paper Abstract

In the last few years, astronomical instruments with infrared detectors have become increasingly important. These detectors as well as the mechanical mechanisms inside the instruments are operated in high vacuum at cryogenic temperature. Since ready-for-use cryogenic actuators are often not available from stock, the Max-Planck-Institut fur Astronomie (MPIA) in Heidelberg has developed actuators for both linear and circular movement. Information about the use of materials, dry film lubricants, and components like motors, micro switches and resolvers for this temperature region is hard to find in literature. Thus, large-scale experiments and tests were made to gain experience and to qualify the actuators for their use at cryogenic temperatures.

Paper Details

Date Published: 29 September 2004
PDF: 8 pages
Proc. SPIE 5495, Astronomical Structures and Mechanisms Technology, (29 September 2004); doi: 10.1117/12.551114
Show Author Affiliations
Ralf-Rainer Rohloff, Max-Planck-Institut fur Astronomie (Germany)
Harald Baumeister, Max-Planck-Institut fur Astronomie (Germany)
Monica Ebert, Max-Planck-Institut fur Astronomie (Germany)
Norbert Munch, Max-Planck-Institut fur Astronomie (Germany)
Vianak Naranjo, Max-Planck-Institut fur Astronomie (Germany)

Published in SPIE Proceedings Vol. 5495:
Astronomical Structures and Mechanisms Technology
Joseph Antebi; Dietrich Lemke, Editor(s)

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