6 August 2010 The University of Tokyo Atacama Observatory 6.5m telescope project
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Abstract
The University of Tokyo Atacama Observatory (TAO) is a project to construct a 6.5m infrared-optimized telescope at the summit of Co. Chajnantor, 5,640 m altitude, in northern Chile, promoted by Institute of Astronomy, University of Tokyo. Thanks to the high altitude and low water vapor, continuous window from 0.9 to 2.5μm as well as new windows at wavelength longer than 25μm appears. The site shows extremely low precipitable water vapor of 0.5mm (25 percentile), and fraction of usable night is more than 80%. Measured median seeing is 0".69, which is comparable or better than major observatories over the world. Prior to the 6.5m telescope, a 1m pathfinder telescope called miniTAO is installed and started observations in 2009. Its successes of Paschen α imaging at 1.875 μm and mid-infrared observations at 30μm confirm promising capabilities of the site. The 6.5m telescope is now at a design phase, and two facility instruments are now being constructed, which are a near-infrared imager/multi-object spectrograph with a field of view of 9'.6 and a mid-infrared imager/spectrograph for observations in 2 to 38μm.
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Yuzuru Yoshii, Yuzuru Yoshii, Tsutomu Aoki, Tsutomu Aoki, Mamoru Doi, Mamoru Doi, Toshihiro Handa, Toshihiro Handa, Kimiaki Kawara, Kimiaki Kawara, Daisuke Kato, Daisuke Kato, Kotaro Kohno, Kotaro Kohno, Masahiro Konishi, Masahiro Konishi, Shintaro Koshida, Shintaro Koshida, Takeo Minezaki, Takeo Minezaki, Natsuko Mitani, Natsuko Mitani, Takashi Miyata, Takashi Miyata, Kentaro Motohara, Kentaro Motohara, Shigeyuki Sako, Shigeyuki Sako, Takao Soyano, Takao Soyano, Toshihiko Tanabe, Toshihiko Tanabe, Masuo Tanaka, Masuo Tanaka, Ken'ichi Tarusawa, Ken'ichi Tarusawa, Leonardo Bronfman, Leonardo Bronfman, Maria Teresa Ruiz, Maria Teresa Ruiz, Mario Hamuy, Mario Hamuy, } "The University of Tokyo Atacama Observatory 6.5m telescope project", Proc. SPIE 7733, Ground-based and Airborne Telescopes III, 773308 (6 August 2010); doi: 10.1117/12.856680; https://doi.org/10.1117/12.856680
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