Subaru Adaptive Optics Program

Hideki Takami; Masanori Iye; Naruhisa Takato; Tomio Kanzawa; Masashi Otsubo; Koji Nakashima

doi:10.1117/12.268978

21 March 1997 Subaru Adaptive Optics Program

Hideki Takami, Masanori Iye, Naruhisa Takato, Tomio Kanzawa, Masashi Otsubo, Koji Nakashima

Proceedings Volume 2871, Optical Telescopes of Today and Tomorrow; (1997) https://doi.org/10.1117/12.268978
Event: Optical Telescopes of Today and Tomorrow, 1996, Landskrona/Hven, Sweden

Abstract

The system overview and the current status of an adaptive optics system for the Cassegrain focus of Subaru 8.2 m telescope under construction atop Mauna Kea is presented. The system is composed of a wavefront curvature sensor with 36 elements photon-counting APD modules and a 36-element bimorph deformable mirror. We aim to get the Strehl ratio of greater than 0.6 at the K band (2.2 micron) using natural guide stars as wavefront reference under the average seeing condition (approximately 0.45 arcsec) at Mauna Kea. It is scheduled to be in operation in 1998. Expected performance, especially the sky coverage when employing natural guide stars are also presented. currently we are testing prototype system with basically identical specifications as those of the final system. We present here the optical system, deformable mirror, wavefront sensor, control system of the final system, and simple introduction and experimental results of the prototype system.

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Hideki Takami, Masanori Iye, Naruhisa Takato, Tomio Kanzawa, Masashi Otsubo, and Koji Nakashima "Subaru Adaptive Optics Program", Proc. SPIE 2871, Optical Telescopes of Today and Tomorrow, (21 March 1997); https://doi.org/10.1117/12.268978

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KEYWORDS

Adaptive optics

Stars

Deformable mirrors

Sensors

Mirrors

Wavefront sensors

Prototyping

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