TY - GEN
T1 - Design and status of a near-infrared multi-object spectrograph for the TAO 6.5-m telescope
AU - Konishi, Masahiro
AU - Motohara, Kentaro
AU - Doi, Mamoru
AU - Sako, Shigeyuki
AU - Toshikawa, Koji
AU - Mitani, Natsuko
AU - Aoki, Tsutomu
AU - Handa, Toshihiro
AU - Ita, Yoshifusa
AU - Kato, Daisuke
AU - Kawara, Kimiaki
AU - Kohno, Kotaro
AU - Koshida, Shintaro
AU - Minezaki, Takeo
AU - Miyata, Takashi
AU - Soyano, Takao
AU - Tanabe, Toshihiko
AU - Tanaka, Masuo
AU - Tarusawa, Ken'Ichi
AU - Yoshii, Yuzuru
PY - 2010/11/12
Y1 - 2010/11/12
N2 - 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.
AB - 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.
KW - Atacama
KW - multi-object spectroscopy
KW - near-infrared
KW - simultaneous color
KW - wide-field imaging
UR - http://www.scopus.com/inward/record.url?scp=78149246796&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78149246796&partnerID=8YFLogxK
U2 - 10.1117/12.856230
DO - 10.1117/12.856230
M3 - Conference contribution
AN - SCOPUS:78149246796
SN - 9780819482259
VL - 7735
BT - Ground-Based and Airborne Instrumentation for Astronomy III
T2 - Ground-Based and Airborne Instrumentation for Astronomy III
Y2 - 27 June 2010 through 2 July 2010
ER -