Vacuum cryogenic wheel-driving mechanism with high positioning repeatability

Vladimir Churilov; Greg Smith; Brian E. Hingley

doi:10.1117/12.453802

25 November 2002 Vacuum cryogenic wheel-driving mechanism with high positioning repeatability

Vladimir Churilov, Greg Smith, Brian E. Hingley

Proceedings Volume 4822, Cryogenic Optical Systems and Instruments IX; (2002) https://doi.org/10.1117/12.453802
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

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.

Citation Download Citation

Vladimir Churilov, Greg Smith, and Brian E. Hingley "Vacuum cryogenic wheel-driving mechanism with high positioning repeatability", Proc. SPIE 4822, Cryogenic Optical Systems and Instruments IX, (25 November 2002); https://doi.org/10.1117/12.453802

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