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Proceedings Paper

Mechanical design and testing of the cryogenic pick-off arms for the VLT KMOS
Author(s): Richard J. Bennett; George H. Davidson; Philip Rees; Stephen P. Todd
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Paper Abstract

This paper describes the mechanical design of the KMOS pick-off arms and the way in which the design is driven by combinations of requirements. The use of a recirculating linear bearing in a cryogenic environment is novel and the qualification of this component is described. Novel use is made of a single leadscrew with two leads to move optical components at different speeds to maintain the optical path length. Cryogenic flexure, repeatability and torque tests are described.

Paper Details

Date Published: 23 July 2008
PDF: 14 pages
Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 70182A (23 July 2008); doi: 10.1117/12.787891
Show Author Affiliations
Richard J. Bennett, UK Astronomy Technology Ctr. (United Kingdom)
George H. Davidson, UK Astronomy Technology Ctr. (United Kingdom)
Philip Rees, UK Astronomy Technology Ctr. (United Kingdom)
Stephen P. Todd, UK Astronomy Technology Ctr. (United Kingdom)


Published in SPIE Proceedings Vol. 7018:
Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

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