22 August 2014 CHOUGH, the Canary Hosted-Upgrade for High-Order Adaptive Optics
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The Canary Hosted-Upgrade for High-Order Adaptive Optics, or CHOUGH, is an upgrade for the Canary Tomographic AO experiment. It aims to enable a high-order 30×30, single-conjugate AO capability on a 4m telescope. It utilizes a Shack-Hartmann WFS with a spatial filter for measurements together with a MEMS-DM and a magnetically actuated DM in tandem to provide the correction (dual-DM architecture). For analysis of the residuals from the correction, there are two separate instruments: a conventional imager operating in the visible part of the spectrum (V- to I-band), and an interferometer that directly measures the phase. At present the system is in the design stage and this paper reports progress towards developing a system that is capable of delivering the goals on-sky.
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Nazim Ali Bharmal, Nazim Ali Bharmal, Richard M. Myers, Richard M. Myers, Alastair G. Basden, Alastair G. Basden, Daniel Hölck, Daniel Hölck, Timothy J. Morris, Timothy J. Morris, } "CHOUGH, the Canary Hosted-Upgrade for High-Order Adaptive Optics", Proc. SPIE 9148, Adaptive Optics Systems IV, 91485V (22 August 2014); doi: 10.1117/12.2055482; https://doi.org/10.1117/12.2055482


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