9 August 2016 Development status of the mid-infrared two-field camera and spectrograph MIMIZUKU for the TAO 6.5-m Telescope
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Abstract
MIMIZUKU is the first-generation mid-infrared instrument for the university of Tokyo Atacama Observatory (TAO) 6.5-m telescope. MIMIZUKU provides imaging and spectroscopic monitoring capabilities in a wide wavelength range from 2 to 38 μm, including unique bands like 2.7-μm and 30-μm band. Recently, we decided to add spectroscopic functions, KL-band mode (λ= 2.1-4.0 μm; R =λ/Δλ ~ 210) and 2.7-μm band mode ( λ= 2.4-2.95 μm; R ~ 620), and continuous spectroscopic coverage from 2.1 to 26 μm is realized by this update. Their optical designing is completed, and fabrications of optical elements are ongoing. As recent progress, we also report the completion of the cryogenic system and optics. The cryogenic system has been updated by changing materials and structures of thermal links, and the temperatures of the optical bench and detector mounting stages finally achieved required temperatures. Their stability against instrument attitude is also confirmed through an inclination test. As for the optics, its gold-plated mirrors have been recovered from galvanic corrosion by refabrication and reconstruction. Enough image quality and stability are confirmed by room-temperature tests. MIMIZUKU is intended to be completed in this autumn, and commissioning at the Subaru telescope and scientific operations on the TAO telescope are planned in 2017 and around 2019, respectively. In this paper, these development activities and future prospects of MIMIZUKU are reported.
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Takafumi Kamizuka, Takafumi Kamizuka, Takashi Miyata, Takashi Miyata, Shigeyuki Sako, Shigeyuki Sako, Ryou Ohsawa, Ryou Ohsawa, Kazushi Okada, Kazushi Okada, Masahito S. Uchiyama, Masahito S. Uchiyama, Kiyoshi Mori, Kiyoshi Mori, Jumpei Yamaguchi, Jumpei Yamaguchi, Kentaro Asano, Kentaro Asano, Mizuho Uchiyama, Mizuho Uchiyama, Itsuki Sakon, Itsuki Sakon, Takashi Onaka, Takashi Onaka, Hirokazu Kataza, Hirokazu Kataza, Sunao Hasegawa, Sunao Hasegawa, Fumihiko Usui, Fumihiko Usui, Naruhisa Takato, Naruhisa Takato, Tsutomu Aoki, Tsutomu Aoki, Mamoru Doi, Mamoru Doi, Natsuko M. Kato, Natsuko M. Kato, Yutaro Kitagawa, Yutaro Kitagawa, Yutaka Kobayakawa, Yutaka Kobayakawa, Kotaro Kohno, Kotaro Kohno, Masahiro Konishi, Masahiro Konishi, Takeo Minezaki, Takeo Minezaki, Tomoki Morokuma, Tomoki Morokuma, Kentaro Motohara, Kentaro Motohara, Hirofumi Ohashi, Hirofumi Ohashi, Takao Soyano, Takao Soyano, Hidenori Takahashi, Hidenori Takahashi, Yoichi Tamura, Yoichi Tamura, Toshihiko Tanabé, Toshihiko Tanabé, Masuo Tanaka, Masuo Tanaka, Ken'ichi Tarusawa, Ken'ichi Tarusawa, Yasunori Terao, Yasunori Terao, Yuzuru Yoshii, Yuzuru Yoshii, } "Development status of the mid-infrared two-field camera and spectrograph MIMIZUKU for the TAO 6.5-m Telescope", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99083W (9 August 2016); doi: 10.1117/12.2231565; https://doi.org/10.1117/12.2231565
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