抄録
We describe the design and current status of a near-infrared multi-object spectrograph for the University of Tokyo Atacama Observatory (TAO) project, which is to construct a 6.5m infrared telescope on the summit of Co. Chajnantor (altitude of 5,460m) in the northern Chile. The instrument, named SWIMS (Simultaneous-color Wide-field Infrared Multi-object Spectrograph), covers a wavelength range from 0.9 to 2.5 μm with a field of view of 9.6 in diameter using 4096 x 4096 pixels with a pixel scale of 0.″13 pixel-1. It has two observation modes: a wide-field imager and a multi-object spectrograph (MOS). The MOS mode adopts cooled multi-slit masks with 30 slits at a maximum, and achieves a spectral resolution of λ/Δλ∼ 1000. Up to 20 masks can be installed in a mask storage dewar. In both modes, two wavelength ranges of 0.9-1.4 μm and 1.4-2.5 μm are observed simultaneously with a dichroic mirror placed in the collimated beam. This will provide us data covering the wide spectral range under same conditions such as weather, telescope pointing, and so on. Such data are important not only for redshift surveys of distant galaxies but also for rapidly time-variable events such as gamma-ray bursts. As SWIMS is expected to be completed before the construction of the 6.5m telescope, we plan to carry out performance verification and early scientific observations on the Subaru Telescope at Hawaii.
本文言語 | English |
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ホスト出版物のタイトル | Ground-Based and Airborne Instrumentation for Astronomy III |
巻 | 7735 |
版 | PART 1 |
DOI | |
出版ステータス | Published - 2010 11 12 |
イベント | Ground-Based and Airborne Instrumentation for Astronomy III - San Diego, CA, United States 継続期間: 2010 6 27 → 2010 7 2 |
Other
Other | Ground-Based and Airborne Instrumentation for Astronomy III |
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Country | United States |
City | San Diego, CA |
Period | 10/6/27 → 10/7/2 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering