Mechanical design and testing of the cryogenic pick-off arms for the VLT KMOS

Details Mechanical design and testing of the cryogenic pick-off arms for the VLT KMOS Mechanical design and testing of the cryogenic pick-off arms for the VLT KMOS

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008spie.7018e..73b&link_type=abstract

Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation. Edited by Atad-Ettedgui, Eli; Lemke, Dietrich.

Computer Science

Scientific paper

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.

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