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Proceedings Paper

Development of a prototype of the Tomo-e Gozen wide-field CMOS camera
Author(s): Shigeyuki Sako; Ryou Osawa; Hidenori Takahashi; Yuki Kikuchi; Mamoru Doi; Naoto Kobayashi; Tsutomu Aoki; Ko Arimatsu; Makoto Ichiki; Shiro Ikeda; Yoshifusa Ita; Toshihiro Kasuga; Hideyo Kawakita; Mitsuru Kokubo; Hiroyuki Maehara; Noriyuki Matsunaga; Hiroyuki Mito; Kazuma Mitsuda; Takashi Miyata; Kiyoshi Mori; Yuki Mori; Mikio Morii; Tomoki Morokuma; Kentaro Motohara; Yoshikazu Nakada; Kentaro Osawa; Shin-ichiro Okumura; Hiroki Onozato; Yuki Sarugaku; Mikiya Sato; Toshikazu Shigeyama; Takao Soyano; Masaomi Tanaka; Yuki Taniguchi; Ataru Tanikawa; Ken'ichi Tarusawa; Nozomu Tominaga; Tomonori Totani; Seitaro Urakawa; Fumihiko Usui; Junichi Watanabe; Jumpei Yamaguchi; Makoto Yoshikawa
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Paper Abstract

The Tomo-e Gozen is an extremely wide-field optical camera for the Kiso 1.0-m Schmidt telescope. It is capable of taking consecutive frames with a field-of-view of 20 deg2 and a sub-second time-resolution, which are achieved by 84 chips of 2k×1k CMOS sensor. This camera adopts unconventional designs including a lightweight structure, a nonvacuumed and naturally-air cooled system, front-side-illuminated CMOS sensors with microlens arrays, a sensor alignment along a spherical focal plane of the telescope, and massive readout electronics. To develop technical components necessary for the Tomo-e Gozen and confirm a feasibility of its basic design, we have developed a prototype-model (PM) of the Tomo-e Gozen prior to the final-model (FM). The Tomo-e PM is equipped with eight chips of the CMOS sensor arranged in a line along the RA direction, covering a sky area of 2.0 deg2. The maximum frame rate is 2 fps. The total data production rate is 80 MByte sec-1 at 2 fps, corresponding to approximately 3 TByte night-1. After laboratory testing, we have successfully obtained consecutive movie data at 2 fps with the Tomo-e PM in the first commissioning run conducted in the end of 2015.

Paper Details

Date Published: 9 August 2016
PDF: 15 pages
Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99083P (9 August 2016); doi: 10.1117/12.2231259
Show Author Affiliations
Shigeyuki Sako, The Univ. of Tokyo (Japan)
Japan Science and Technology Agency (Japan)
Ryou Osawa, The Univ. of Tokyo (Japan)
Hidenori Takahashi, The Univ. of Tokyo (Japan)
Yuki Kikuchi, The Univ. of Tokyo (Japan)
Mamoru Doi, The Univ. of Tokyo (Japan)
Naoto Kobayashi, The Univ. of Tokyo (Japan)
Tsutomu Aoki, The Univ. of Tokyo (Japan)
Ko Arimatsu, National Astronomical Observatory of Japan (Japan)
Makoto Ichiki, The Univ. of Tokyo (Japan)
Shiro Ikeda, The Institute of Statistical Mathematics (Japan)
Yoshifusa Ita, Tohoku Univ. (Japan)
Toshihiro Kasuga, Chiba Institute of Technology (Japan)
Hideyo Kawakita, Kyoto Sangyo Univ. (Japan)
Mitsuru Kokubo, The Univ. of Tokyo (Japan)
Hiroyuki Maehara, National Astronomical Observatory of Japan (Japan)
Noriyuki Matsunaga, The Univ. of Tokyo (Japan)
Hiroyuki Mito, The Univ. of Tokyo (Japan)
Kazuma Mitsuda, The Univ. of Tokyo (Japan)
Takashi Miyata, The Univ. of Tokyo (Japan)
Kiyoshi Mori, The Univ. of Tokyo (Japan)
Yuki Mori, The Univ. of Tokyo (Japan)
Mikio Morii, The Institute of Statistical Mathematics (Japan)
Tomoki Morokuma, The Univ. of Tokyo (Japan)
Kentaro Motohara, The Univ. of Tokyo (Japan)
Yoshikazu Nakada, The Univ. of Tokyo (Japan)
Kentaro Osawa, The Univ. of Tokyo (Japan)
Shin-ichiro Okumura, Japan Spaceguard Association (Japan)
Hiroki Onozato, Tohoku Univ. (Japan)
Yuki Sarugaku, The Univ. of Tokyo (Japan)
Mikiya Sato, Kawasaki Municipal Science Museum (Japan)
Toshikazu Shigeyama, The Univ. of Tokyo (Japan)
Takao Soyano, The Univ. of Tokyo (Japan)
Masaomi Tanaka, National Astronomical Observatory of Japan (Japan)
Yuki Taniguchi, The Univ. of Tokyo (Japan)
Ataru Tanikawa, The Univ. of Tokyo (Japan)
Ken'ichi Tarusawa, The Univ. of Tokyo (Japan)
Nozomu Tominaga, Konan Univ. (Japan)
Tomonori Totani, The Univ. of Tokyo (Japan)
Seitaro Urakawa, Japan Spaceguard Association (Japan)
Fumihiko Usui, Kobe Univ. (Japan)
Junichi Watanabe, National Astronomical Observatory of Japan (Japan)
Jumpei Yamaguchi, The Univ. of Tokyo (Japan)
Makoto Yoshikawa, Japan Aerospace Exploration Agency (Japan)


Published in SPIE Proceedings Vol. 9908:
Ground-based and Airborne Instrumentation for Astronomy VI
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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