27 July 2016 The design of an adaptive optics telescope: the case of DAG
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Abstract
In this paper, we describe in detail the optical design of DAG, a new 4 m telescope for Turkey. DAG is an "adaptive optics friendly" telescope, in a sense that each design decision is taken considering the potential impact on the AO performance (vibrations, static aberrations etc.) The objective is to make this telescope fully ready for AO at first light. It is designed as a Ritchey-Chrétien combination, 56 m focal length, with Nasmyth foci only, and active optics. Its total RMS error is expected to be 45 nm up to Zernike mode 78, and 26 nm for the higher, non AO corrected modes. A final design optimization has been done by the telescope manufacturers, demonstrating that our AO-based requirements can be satisfied, without much difficulty.
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Laurent Jolissaint, Laurent Jolissaint, Onur Keskin, Onur Keskin, Lorenzo Zago, Lorenzo Zago, Sinan Kaan Yerli, Sinan Kaan Yerli, Cahit Yesilyaprak, Cahit Yesilyaprak, Emeric Mudry, Emeric Mudry, Grégory Lousberg, Grégory Lousberg, } "The design of an adaptive optics telescope: the case of DAG", Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 99063J (27 July 2016); doi: 10.1117/12.2233297; https://doi.org/10.1117/12.2233297
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