Active flexure compensation for the HROS spectrograph

Paolo D'Arrigo; Richard G. Bingham; Andrew Charalambous; Kambiz Saber-Sheikh; Trevor E. Savidge

doi:10.1117/12.395549

16 August 2000 Active flexure compensation for the HROS spectrograph

Paolo D'Arrigo, Richard G. Bingham, Andrew Charalambous, Kambiz Saber-Sheikh, Trevor E. Savidge

Proceedings Volume 4008, Optical and IR Telescope Instrumentation and Detectors; (2000) https://doi.org/10.1117/12.395549
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

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.

Citation Download Citation

Paolo D'Arrigo, Richard G. Bingham, Andrew Charalambous, Kambiz Saber-Sheikh, and Trevor E. Savidge "Active flexure compensation for the HROS spectrograph", Proc. SPIE 4008, Optical and IR Telescope Instrumentation and Detectors, (16 August 2000); https://doi.org/10.1117/12.395549

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