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Proceedings Paper

Active flexure compensation for the HROS spectrograph
Author(s): Paolo D'Arrigo; Richard G. Bingham; Andrew Charalambous; Kambiz Saber-Sheikh; Trevor E. Savidge
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Paper Abstract

The Cassegrain location of the high resolution optical spectrograph (HROS) for the 8-meter Gemini telescope presents a difficult challenge in controlling mechanical flexure. This is especially the case for a high-resolution spectrography, which requires large and heavy optical components. In HROS, to achieve the required spectrum stability of 2.0 micrometers /hr, we developed a closed-loop monitoring and correction system capable of measuring the spectrograph flexure in as it happens and actively compensating for image motion.

Paper Details

Date Published: 16 August 2000
PDF: 5 pages
Proc. SPIE 4008, Optical and IR Telescope Instrumentation and Detectors, (16 August 2000); doi: 10.1117/12.395549
Show Author Affiliations
Paolo D'Arrigo, Univ. College London (United Kingdom)
Richard G. Bingham, Univ. College London (United Kingdom)
Andrew Charalambous, Univ. College London (United Kingdom)
Kambiz Saber-Sheikh, Univ. College London (United Kingdom)
Trevor E. Savidge, Univ. College London (United Kingdom)


Published in SPIE Proceedings Vol. 4008:
Optical and IR Telescope Instrumentation and Detectors
Masanori Iye; Alan F. M. Moorwood, Editor(s)

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