9 August 2016 Development of a prototype of the Tomo-e Gozen wide-field CMOS camera
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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.
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Shigeyuki Sako, Shigeyuki Sako, Ryou Osawa, Ryou Osawa, Hidenori Takahashi, Hidenori Takahashi, Yuki Kikuchi, Yuki Kikuchi, Mamoru Doi, Mamoru Doi, Naoto Kobayashi, Naoto Kobayashi, Tsutomu Aoki, Tsutomu Aoki, Ko Arimatsu, Ko Arimatsu, Makoto Ichiki, Makoto Ichiki, Shiro Ikeda, Shiro Ikeda, Yoshifusa Ita, Yoshifusa Ita, Toshihiro Kasuga, Toshihiro Kasuga, Hideyo Kawakita, Hideyo Kawakita, Mitsuru Kokubo, Mitsuru Kokubo, Hiroyuki Maehara, Hiroyuki Maehara, Noriyuki Matsunaga, Noriyuki Matsunaga, Hiroyuki Mito, Hiroyuki Mito, Kazuma Mitsuda, Kazuma Mitsuda, Takashi Miyata, Takashi Miyata, Kiyoshi Mori, Kiyoshi Mori, Yuki Mori, Yuki Mori, Mikio Morii, Mikio Morii, Tomoki Morokuma, Tomoki Morokuma, Kentaro Motohara, Kentaro Motohara, Yoshikazu Nakada, Yoshikazu Nakada, Kentaro Osawa, Kentaro Osawa, Shin-ichiro Okumura, Shin-ichiro Okumura, Hiroki Onozato, Hiroki Onozato, Yuki Sarugaku, Yuki Sarugaku, Mikiya Sato, Mikiya Sato, Toshikazu Shigeyama, Toshikazu Shigeyama, Takao Soyano, Takao Soyano, Masaomi Tanaka, Masaomi Tanaka, Yuki Taniguchi, Yuki Taniguchi, Ataru Tanikawa, Ataru Tanikawa, Ken'ichi Tarusawa, Ken'ichi Tarusawa, Nozomu Tominaga, Nozomu Tominaga, Tomonori Totani, Tomonori Totani, Seitaro Urakawa, Seitaro Urakawa, Fumihiko Usui, Fumihiko Usui, Junichi Watanabe, Junichi Watanabe, Jumpei Yamaguchi, Jumpei Yamaguchi, Makoto Yoshikawa, Makoto Yoshikawa, "Development of a prototype of the Tomo-e Gozen wide-field CMOS camera", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99083P (9 August 2016); doi: 10.1117/12.2231259; https://doi.org/10.1117/12.2231259
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