Optical design of the adaptive optics system for DAG, the new 4 m Turkish telescope

Audrey Bouxin; Laurent Jolissaint; Onur Keskin; Cahit Yesilyaprak; Paolo Spano

doi:10.1117/12.2562310

12 January 2021 Optical design of the adaptive optics system for DAG, the new 4 m Turkish telescope

Audrey Bouxin, Laurent Jolissaint, Onur Keskin, Cahit Yesilyaprak, Paolo Spano

Proceedings Volume 11448, Adaptive Optics Systems VII; 114484R (2021) https://doi.org/10.1117/12.2562310
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

We present the design of the Adaptive Optics System for the new Turkish 4-m telescope (DAG). The AO will use a pyramid WFS, with a double prism and a no noise EM-CCD camera to allow for oversampling of the pupil images and a relaxation of the prism manufacturing tolerances. In order to use the high modal resolution of the P-WFS allowed by the adjustment of the modulation angle, we implement a high order deformable mirror with 468 actuators, which will permit to use the system in extreme AO correction mode. The P-WFS optical design has been largely inspired by NFIRAOS truth WFS. The number of optical surfaces has been reduced to the bare minimum. An atmospheric dispersion compensator is introduced around the tip-tilt modulation mirror. In this proceeding, we present the detail of the optical design steps for all the components of the system.

Citation Download Citation

Audrey Bouxin, Laurent Jolissaint, Onur Keskin, Cahit Yesilyaprak, and Paolo Spano "Optical design of the adaptive optics system for DAG, the new 4 m Turkish telescope", Proc. SPIE 11448, Adaptive Optics Systems VII, 114484R (12 January 2021); https://doi.org/10.1117/12.2562310

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