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Proceedings Paper

First results from the Subaru AO system
Author(s): Wolfgang Gaessler; Hideki Takami; Naruhisa Takato; Yutaka Hayano; Yukiko Kamata; David Saint-Jacques; Yosuke Minowa; Masanori Iye
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Paper Abstract

An adaptive optics system was developed for the 8.2-m Subaru Telescope operated by the National Astronomical Observatory of Japan on the summit of Mauna Kea in Hawaii. The system saw first light on 2 December 2000 and achieved diffraction limited imaging in the K- and L- band. The system is located at the Cassegrain focus of Subaru and can feed either IRCS, an infrared camera and spectrograph (used for first light) or CIAO, an infrared coronagraphic imager. The system features a 36-elements curvature sensor using avalanche photo diodes and a 36-electrodes bimorph deformable mirror. The curvature sensor and deformable mirror were custom designed for an optimum match. Wavefront sensing is performed in the visible range while AO-corrected observations are made in the infrared. In this paper the first AO observations are described and the system performances are compared with the design values. A comparison is also made with other existing AO systems. First scientific demonstrations are shown.

Paper Details

Date Published: 4 February 2002
PDF: 11 pages
Proc. SPIE 4494, Adaptive Optics Systems and Technology II, (4 February 2002); doi: 10.1117/12.454806
Show Author Affiliations
Wolfgang Gaessler, National Astronomical Observatory of Japan/Subaru Telescope (Germany)
Hideki Takami, National Astronomical Observatory of Japan (United States)
Naruhisa Takato, National Astronomical Observatory of Japan/Subaru Telescope (United States)
Yutaka Hayano, National Astronomical Observatory of Japan (Japan)
Yukiko Kamata, National Astronomical Observatory of Japan (Japan)
David Saint-Jacques, National Astronomical Observatory of Japan (Canada)
Yosuke Minowa, National Astronomical Observatory of Japan (United States)
Masanori Iye, National Astronomical Observatory of Japan (Japan)


Published in SPIE Proceedings Vol. 4494:
Adaptive Optics Systems and Technology II
Robert K. Tyson; Domenico Bonaccini; Michael C. Roggemann, Editor(s)

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