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Proceedings Paper

The design of an adaptive optics telescope: the case of DAG
Author(s): Laurent Jolissaint; Onur Keskin; Lorenzo Zago; Sinan Kaan Yerli; Cahit Yesilyaprak; Emeric Mudry; Grégory Lousberg
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Paper 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.

Paper Details

Date Published: 27 July 2016
PDF: 13 pages
Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 99063J (27 July 2016); doi: 10.1117/12.2233297
Show Author Affiliations
Laurent Jolissaint, Univ. of Applied Sciences Western Switzerland (Switzerland)
Onur Keskin, Isik Univ. (Turkey)
Lorenzo Zago, Univ. of Applied Sciences Western Switzerland (Switzerland)
Sinan Kaan Yerli, Middle East Technical Univ. (Turkey)
Cahit Yesilyaprak, Atatürk Univ. (Turkey)
Emeric Mudry, Advanced Mechanical and Optical Systems (AMOS) (Belgium)
Grégory Lousberg, Advanced Mechanical and Optical Systems (AMOS) (Belgium)

Published in SPIE Proceedings Vol. 9906:
Ground-based and Airborne Telescopes VI
Helen J. Hall; Roberto Gilmozzi; Heather K. Marshall, Editor(s)

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