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Proceedings Paper

MOIRCS: muti-object infrared camera and spectrograph for the Subaru Telescope
Author(s): Chihiro Tokoku; Ryuji Suzuki; Takashi Ichikawa; Ken'ichiro Asai; Yuka Katsuno; Koji Omata; Toru Yamada; Atsuo Sasaki; Tetsuo Nishimura
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Paper Abstract

MOIRCS (Multi-Object InfraRed Camera and Spectrograph) is one of the second generation instruments for the Subaru Telescope. This instrument is under construction by the National Astronomical Observatory of Japan and Tohoku University. It has imaging and multi-object spectroscopy (MOS) capabilities in the wavelength range from 0.85 μm to 2.5 μm with 4' x 7' F.O.V. The focal plane is imaged onto two 2048 x 2048 pixel HAWAII-2 HgCdTe arrays with a pixel scale of 0."12 pixel-1 through two independent optical trains. The optical design is optimized to maximize K band performance. Unique design of MOIRCS allows multi-object spectroscopy out to K band with cooled multi-slit masks. Twenty-four masks are stored in a mask dewar and are exchanged in the cryogenic environment. The mask dewar has its own vacuum pump and cryogenic cooler, and the masks can be assessed without breaking the vacuum of the main dewar. The two-channel optics and arrays are mounted back-to-back of a single optical bench plate. A PC-Linux based infrared array control system has been prepared to operate HAWAII-2. The first light of MOIRCS is planned in the spring of 2003.

Paper Details

Date Published: 7 March 2003
PDF: 9 pages
Proc. SPIE 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes, (7 March 2003); doi: 10.1117/12.461911
Show Author Affiliations
Chihiro Tokoku, Astronomy Institute/Tohoku Univ. (Japan)
Subaru Telescope/NAOJ (United States)
Ryuji Suzuki, Astronomy Institute/Tohoku Univ. (Japan)
Takashi Ichikawa, Astronomy Institute/Tohoku Univ. (Japan)
Ken'ichiro Asai, Astronomy Institute/Tohoku Univ. (Japan)
Yuka Katsuno, Astronomy Institute/Tohoku Univ. (Japan)
Koji Omata, Subaru Telescope/NAOJ (United States)
Toru Yamada, National Astronomical Observatory of Japan (Japan)
Atsuo Sasaki, Tohoku Univ. (Japan)
Tetsuo Nishimura, Subaru Telescope/NAOJ (United States)

Published in SPIE Proceedings Vol. 4841:
Instrument Design and Performance for Optical/Infrared Ground-based Telescopes
Masanori Iye; Alan F. M. Moorwood, Editor(s)

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