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Proceedings Paper

Hyper Suprime-Cam: filter exchange unit and shutter
Author(s): Fumihiro Uraguchi; Shiang-Yu Wang; Yutaka Komiyama; Eric J. Y. Liaw; Chi-Fang Chiu; Hsin-Yo Chen; Cheng-Lin Ho; Tsang-Chih Lai; Yao-Cheng Lee; Dun-Zen Jeng; Satoru Iwamura; Yukiko Kamata; Satoshi Kawanomoto; Satoshi Miyazaki; Tomoki Morokuma; Hidehiko Nakaya; Yousuke Utsumi
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Paper Abstract

We have developed a filter exchange unit (FEU) and a shutter of Hyper Suprime-Cam (HSC). FEU consists of two parts; the alignment mechanism of the filter in the optical path and a jukebox of the filters. The alignment mechanism can guarantee 10 μm position stability with respect to the focal plane CCDs. On the exchange sequence, a motorized cart grabs and pushes the filter from the jukebox. Each jukebox has 3 slots and we have two identical jukeboxes. The operation is fully automated and the entire exchange sequence takes 16 minutes. Also, we developed the focal-plane shutter with 1,030 mm diameter envelope and 60 mm thickness while having 600 mm aperture. We report the detail of design and implementation of the shutter and FEU, and installation procedure of FEU.

Paper Details

Date Published: 24 September 2012
PDF: 11 pages
Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 844663 (24 September 2012); doi: 10.1117/12.927240
Show Author Affiliations
Fumihiro Uraguchi, National Astronomical Observatory of Japan (Japan)
Shiang-Yu Wang, Institute of Astronomy and Astrophysics (Taiwan)
Yutaka Komiyama, National Astronomical Observatory of Japan (Japan)
Eric J. Y. Liaw, Chung Shan Institute of Science and Technology (Taiwan)
Chi-Fang Chiu, Chung Shan Institute of Science and Technology (Taiwan)
Hsin-Yo Chen, Institute of Astronomy and Astrophysics (Taiwan)
Cheng-Lin Ho, Chung Shan Institute of Science and Technology (Taiwan)
Tsang-Chih Lai, Chung Shan Institute of Science and Technology (Taiwan)
Yao-Cheng Lee, Chung Shan Institute of Science and Technology (Taiwan)
Dun-Zen Jeng, Chung Shan Institute of Science and Technology (Taiwan)
Satoru Iwamura, MRJ (Japan)
Yukiko Kamata, National Astronomical Observatory of Japan (Japan)
Satoshi Kawanomoto, National Astronomical Observatory of Japan (Japan)
Satoshi Miyazaki, National Astronomical Observatory of Japan (Japan)
Tomoki Morokuma, The Univ. of Tokyo (Japan)
Hidehiko Nakaya, National Astronomical Observatory of Japan (Japan)
Yousuke Utsumi, National Astronomical Observatory of Japan (Japan)


Published in SPIE Proceedings Vol. 8446:
Ground-based and Airborne Instrumentation for Astronomy IV
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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