The design of an adaptive optics telescope: the case of DAG

Laurent Jolissaint; Onur Keskin; Lorenzo Zago; Sinan Kaan Yerli; Cahit Yesilyaprak; Emeric Mudry; Grégory Lousberg

doi:10.1117/12.2233297

27 July 2016 The design of an adaptive optics telescope: the case of DAG

Laurent Jolissaint, Onur Keskin, Lorenzo Zago, Sinan Kaan Yerli, Cahit Yesilyaprak, Emeric Mudry, Grégory Lousberg

Proceedings Volume 9906, Ground-based and Airborne Telescopes VI; 99063J (2016) https://doi.org/10.1117/12.2233297
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

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.

Citation Download Citation

Laurent Jolissaint, Onur Keskin, Lorenzo Zago, Sinan Kaan Yerli, Cahit Yesilyaprak, Emeric Mudry, and 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); https://doi.org/10.1117/12.2233297

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