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Proceedings Paper

Seeing environment at a 5640m altitude of Co. Chajnantor in northern Chile
Author(s): Kentaro Motohara; Tsutomu Aoki; Shigeyuki Sako; Takao Soyano; Mamoru Doi; Masuo Tanaka; Toshihiko Tanabe; Toshihiro Handa; Natsuko Mitani; Takeo Minezaki; Takashi Miyata; Kimiaki Kawara; Kotaro Kohno; Ken'ichi Tarusawa; Yuzuru Yoshii; Leonard Bronfman; Maria Teresa Ruiz; Fumihiro Uraguchi; Naruhisa Takato
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Paper Abstract

We have carried out a campaign to monitor seeing at a 5640m altitude on the summit of Co. Chajnantor at Atacama, for the 6.5m telescope TAO project planned by the University of Tokyo. The seeing conditions were measured at 0.5μm using a DIMM (Differential Image Motion Monitor) during 8 nights in November 2006 and April 2007. In April, the measurement was done on a 2m-tower to suppress effect of ground-layer turbulence. The best night showed median seeing of 0.38, while the total median seeing is 0.69. This is comparable or even better than most of the major observatories. Together with the high transparency in infrared wavelength owing to the extremely high altitude of 5640m and its accessibility, the summit of Co. Chajnantor is one of the best site for infrared astronomy on the Earth.

Paper Details

Date Published: 10 July 2008
PDF: 10 pages
Proc. SPIE 7012, Ground-based and Airborne Telescopes II, 701244 (10 July 2008); doi: 10.1117/12.788498
Show Author Affiliations
Kentaro Motohara, Institute of Astronomy, Univ. of Tokyo (Japan)
Tsutomu Aoki, Kiso Observatory, Univ. of Tokyo (Japan)
Shigeyuki Sako, Institute of Astronomy, Univ. of Tokyo (Japan)
Takao Soyano, Kiso Observatory, Univ. of Tokyo (Japan)
Mamoru Doi, Institute of Astronomy, Univ. of Tokyo (Japan)
Masuo Tanaka, Institute of Astronomy, Univ. of Tokyo (Japan)
Toshihiko Tanabe, Institute of Astronomy, Univ. of Tokyo (Japan)
Toshihiro Handa, Institute of Astronomy, Univ. of Tokyo (Japan)
Natsuko Mitani, Institute of Astronomy, Univ. of Tokyo (Japan)
Takeo Minezaki, Institute of Astronomy, Univ. of Tokyo (Japan)
Takashi Miyata, Institute of Astronomy, Univ. of Tokyo (Japan)
Kimiaki Kawara, Institute of Astronomy, Univ. of Tokyo (Japan)
Kotaro Kohno, Institute of Astronomy, Univ. of Tokyo (Japan)
Ken'ichi Tarusawa, Kiso Observatory, Univ. of Tokyo (Japan)
Yuzuru Yoshii, Institute of Astronomy, Univ. of Tokyo (Japan)
Leonard Bronfman, Univ. of Chile (Chile)
Maria Teresa Ruiz, Univ. of Chile (Chile)
Fumihiro Uraguchi, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Naruhisa Takato, Subaru Telescope, National Astronomical Observatory of Japan (United States)


Published in SPIE Proceedings Vol. 7012:
Ground-based and Airborne Telescopes II
Larry M. Stepp; Roberto Gilmozzi, Editor(s)

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