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29 August 2022 An on-sky test bench for the GIRMOS open-loop calibration procedures
Paolo Turri, Scott C. Chapman, Uriel Conod, Tarun Kumar, Olivier Lardière, Kate Jackson, Jean-Pierre Véran, David R. Andersen, Glen Herriot
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Proceedings Volume 12185, Adaptive Optics Systems VIII; 121854B (2022) https://doi.org/10.1117/12.2630570
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada
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Abstract
GIRMOS is an integral field spectrograph designed to operate behind the Gemini North Adaptive Optics system. Its four arms will run in open-loop mode, using the telemetry received from GNAO to reconstruct tomographically the turbulence along each direction. The application of open-loop correction has been shown to be challenging on other instruments, because of the inability to monitor in real time its effect on the observed target. To reduce the risks associated to the use of open-loop adaptive optics with GIRMOS, we test our calibration procedures on sky using REVOLT, the adaptive optics bench and imager for the 1.2m telescope at the Dominion Astrophysical Observatory in Victoria, Canada.
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Paolo Turri, Scott C. Chapman, Uriel Conod, Tarun Kumar, Olivier Lardière, Kate Jackson, Jean-Pierre Véran, David R. Andersen, and Glen Herriot "An on-sky test bench for the GIRMOS open-loop calibration procedures", Proc. SPIE 12185, Adaptive Optics Systems VIII, 121854B (29 August 2022); https://doi.org/10.1117/12.2630570
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KEYWORDS
Calibration
Adaptive optics
Telescopes
Wavefronts
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