Active flexure compensation for the HROS spectrograph

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

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBNpeer-review


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.
Original languageEnglish
Title of host publicationProc. SPIE 4008
Place of PublicationUK
Number of pages5
Publication statusPublished - 16 Aug 2000
EventProc. SPIE 4008 - Munich, Germany
Duration: 16 Aug 2000 → …

Publication series

NameOptical and IR Telescope Instrumentation and Detectors


ConferenceProc. SPIE 4008
Period16/08/00 → …


Dive into the research topics of 'Active flexure compensation for the HROS spectrograph'. Together they form a unique fingerprint.

Cite this