The Tomo-e Gozen wide field CMOS camera for the Kiso Schmidt telescope

Takuya Yamashita,Mikiya Sato,Noriaki Arima,Ryou Ohsawa,Takao Soyano,Makoto Yoshikawa,Toshikazu Shigeyama,Mitsuru Kokubo,Hiroyuki Maehara,Mamoru Doi,Masahiro Konishi,Seitaro Urakawa,Yuto Kojima,Kota Inooka,Yuki Mori,Tomoki Morokuma,Tomonori Totani,Noriyuki Matsunaga,Ko Arimatsu,Shigeyuki Sako,Masaomi Tanaka,Toshihiro Kasuga,Yoshifusa Ita,Kentaro Motohara,Shiro Ikeda,Takashi Miyata,Yuki Sarugaku,Fumihiko Usui,Naoto Kobayashi,Nozomu Tominaga,Tsutomu Aoki,Y Nakada ,K Tarusawa ,K Mitsuda ,S Okumura ,Masaaki Ichiki ,H Takahashi ,M Morii ,J Watanabe

doi:10.1117/12.2310049

The Tomo-e Gozen wide field CMOS camera for the Kiso Schmidt telescope

Takuya Yamashita, Mikiya Sato + Show 37 more

https://doi.org/10.1117/12.2310049

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Publication Date: Jul 6, 2018

Citations: 25

Affiliation: Kyoto University, The University of Tokyo, Tohoku University, Japan Science and Technology Agency, The Institute of Statistical Mathematics, Japan Spaceguard Association, National Astronomical Observatory of Japan, Japan Meteorological Agency, Kyoto Sangyo University

#Tomo-e Gozen #Schmidt Telescope + Show 8 more

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Abstract

The Tomo-e Gozen is a wide-field high-speed camera for the Kiso 1.0-m Schmidt telescope, with a field-of-view of 20.7-deg2 covered by 84 chips of 2k x 1k CMOS image sensors with 19-μm pixels. It is capable to take consecutive images at 2-fps in full-frame read with an absolute time accuracy of 0.2 millisecond. The sensors are operated without mechanical coolers owing to a low dark current at room temperature. A low read noise of 2-e- achieves higher sensitivity than that with a CCD sensor in short exposures. Big data of 30-TBytes per night produced in the 2-fps observations is processed in real-time to quickly detect transient events and issue alerts for follow-ups.

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