Optical design of a Cassegrain mounted AO relay for Imaka

John Pazder

doi:10.1117/12.925859

13 September 2012 Optical design of a Cassegrain mounted AO relay for Imaka

John Pazder

Author Affiliations +

Proceedings Volume 8447, Adaptive Optics Systems III; 84473U (2012) https://doi.org/10.1117/12.925859
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

The Imaka project is a ground layer adaptive optics system proposed for the Canada-France-Hawaii Telescope. This paper presents the optical design of a Cassegrain mounted ground layer adaptive optics system with a 0.8 degree field of view for Imaka. The design incorporates a Takeshi concentric ADC and a f/8 to f/5.7 reducer. This is followed with a novel double pass system to image the pupil on a 300mm mildly concave deformable mirror and re-image the system on the detector. The design meets the required 0.15" 80% encircled energy image performance, including correction for atmospheric dispersion. The optical design is presented with the predicted imaging performance.

Citation Download Citation

John Pazder "Optical design of a Cassegrain mounted AO relay for Imaka", Proc. SPIE 8447, Adaptive Optics Systems III, 84473U (13 September 2012); https://doi.org/10.1117/12.925859

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