Poster + Paper
12 January 2021 Optical design of the adaptive optics system for DAG, the new 4 m Turkish telescope
Author Affiliations +
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.
© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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KEYWORDS
Adaptive optics

Optical design

Telescopes

Modulation

Prisms

Cameras

Deformable mirrors

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