Precision cryogenic mechanisms for the Michelle mid-IR spectrograph

Details Precision cryogenic mechanisms for the Michelle mid-IR spectrograph Precision cryogenic mechanisms for the Michelle mid-IR spectrograph

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4841..181m&link_type=abstract

Instrument Design and Performance for Optical/Infrared Ground-based Telescopes. Edited by Iye, Masanori; Moorwood, Alan F. M.

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The UKATC has recently delivered and commissioned the Michelle mid-IR spectrograph on UKIRT. This instrument has a variety of precision vacuum-cryogenic mechanisms that utilize technology developed over a number of years at the UKATC in instruments such as IRCAM, CGS4, SCUBA, GMOS and UIST. In these applications it is critical that the mechanisms operate reliably and with a high degree of precision. In most cases the mechanisms support optical elements that must be rigidly held in place when the instrument is tilted during observations on the telescope. This paper describes the level of performance achieved with the Michelle mechanisms and the critical elements of their design.

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