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13 December 2020 The University of Tokyo Atacama Observatory 6.5m telescope: On-sky performance of the near-infrared instrument SWIMS on the Subaru telescope
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Abstract
The Simultaneous-color Wide-field Infrared Multi-object Spectrograph (SWIMS) is one of the 1st generation facility instruments for the University of Tokyo Atacama Observatory (TAO) 6.5 m telescope currently being constructed at the summit of Cerro Chajnantor (5,640 m altitude) in northern Chile. SWIMS has two optical arms, the blue arm covering 0.9–1.4 µm and the red 1.4–2.5 µm, by inserting a dichroic mirror into the collimated beam, and thus is capable of taking images in two filter-bands simultaneously in imaging mode, or whole nearinfrared (0.9–2.5 µm) low-to-medium resolution multi-object spectra in spectroscopy (MOS) mode, both with a single exposure. SWIMS was carried into Subaru Telescope in 2017 for performance evaluation prior to completion of the construction of the 6.5 m telescope, and successfully saw the imaging first light in May 2018 and MOS first light in Jan 2019. After three engineering runs including the first light observations, SWIMS has been accepted as a new PI instrument for Subaru Telescope from the semester S21A until S22B. In this paper, we report on details of on-sky performance of the instrument evaluated during the engineering observations for a total of 7.5 nights.
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Masahiro Konishi, Kentaro Motohara, Hidenori Takahashi, Natsuko Kato, Kosuke Kushibiki, Hiroki Nakamura, Nuo Chen, Tadayuki Kodama, Masao Hayashi, Ichi Tanaka, Ken-ichi Tadaki, Jun Toshikawa, Yusei Koyama, Rhythm Shimakawa, Tomoko L. Suzuki, Tetsuro Asano, Hirofumi Okita, Shintaro Koshida, Ken Tateuchi, Soya Todo, Yutaka Kobayakawa, Yutaro Kitagawa, Hirofumi Ohashi, Yukihiro Kono, Yasunori Terao, Tsutomu Aoki, Kentaro Asano, Mamoru Doi, Bunyo Hatsukade, Takafumi Kamizuka, Kotaro Kohno, Takeo Minezaki, Takashi Miyata, Tomoki Morokuma, Mizuki Numata, Shigeyuki Sako, Hiroaki Sameshima, Takao Soyano, Toshihiko Tanabé, Masuo Tanaka, Ken'ichi Tarusawa, Ryou Ohsawa, Kengo Tachibana, Tsubasa Michifuji, and Yuzuru Yoshii "The University of Tokyo Atacama Observatory 6.5m telescope: On-sky performance of the near-infrared instrument SWIMS on the Subaru telescope", Proc. SPIE 11447, Ground-based and Airborne Instrumentation for Astronomy VIII, 114475H (13 December 2020); https://doi.org/10.1117/12.2560422
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KEYWORDS
Telescopes

Observatories

Astronomical imaging

Infrared telescopes

Imaging spectroscopy

Infrared radiation

Infrared spectroscopy

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