Cryogenic actuators in ground-based astronomical instrumentation

Ralf-Rainer Rohloff; Harald Baumeister; Monica Ebert; Norbert Munch; Vianak Naranjo

doi:10.1117/12.551114

29 September 2004 Cryogenic actuators in ground-based astronomical instrumentation

Ralf-Rainer Rohloff, Harald Baumeister, Monica Ebert, Norbert Munch, Vianak Naranjo

Proceedings Volume 5495, Astronomical Structures and Mechanisms Technology; (2004) https://doi.org/10.1117/12.551114
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

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.

Citation Download Citation

Ralf-Rainer Rohloff, Harald Baumeister, Monica Ebert, Norbert Munch, and Vianak Naranjo "Cryogenic actuators in ground-based astronomical instrumentation", Proc. SPIE 5495, Astronomical Structures and Mechanisms Technology, (29 September 2004); https://doi.org/10.1117/12.551114

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