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Proceedings Paper

Vacuum cryogenic wheel-driving mechanism with high positioning repeatability
Author(s): Vladimir Churilov; Greg Smith; Brian E. Hingley
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Paper Abstract

The repeatability of positioning of wheels carrying optical components can be critical for the performance of optical instruments. We present the cryogenic worm driven wheel positioning mechanism designed for Anglo-Australian Observatory's Infrared Imager and Spectrograph IRIS2. The mechanism, which was designed for a high vacuum environment and working temperature of 70-90K, utilized an aluminum worm and gearwheel, stepper motor and an encoding system based on infrared sensors. The mechanism has demonstrated repeatability of 1 arcmin.

Paper Details

Date Published: 25 November 2002
PDF: 8 pages
Proc. SPIE 4822, Cryogenic Optical Systems and Instruments IX, (25 November 2002); doi: 10.1117/12.453802
Show Author Affiliations
Vladimir Churilov, Anglo-Australian Observatory (Australia)
Greg Smith, Anglo-Australian Observatory (Australia)
Brian E. Hingley, Sonacom Ltd. (Australia)


Published in SPIE Proceedings Vol. 4822:
Cryogenic Optical Systems and Instruments IX
James B. Heaney; Lawrence G. Burriesci, Editor(s)

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