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Proceedings Paper

Subaru Adaptive Optics Program
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Paper 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.

Paper Details

Date Published: 21 March 1997
PDF: 9 pages
Proc. SPIE 2871, Optical Telescopes of Today and Tomorrow, (21 March 1997); doi: 10.1117/12.268978
Show Author Affiliations
Hideki Takami, National Astronomical Observatory (Japan)
Masanori Iye, National Astronomical Observatory (Japan)
Naruhisa Takato, National Astronomical Observatory (Japan)
Tomio Kanzawa, National Astronomical Observatory (Japan)
Masashi Otsubo, National Astronomical Observatory of Japan (Japan)
Koji Nakashima, Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 2871:
Optical Telescopes of Today and Tomorrow
Arne L. Ardeberg, Editor(s)

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