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Proceedings Paper

The University of Tokyo Atacama 1.0-m Telescope
Author(s): Takeo Minezaki; Daisuke Kato; Shigeyuki Sako; Masahiro Konishi; Shintaro Koshida; Natsuko Mitani; Tsutomu Aoki; Mamoru Doi; Toshihiro Handa; Yoshifusa Ita; Kimiaki Kawara; Kotaro Kohno; Takashi Miyata; Kentaro Motohara; Takao Soyano; Toshihiko Tanabé; Masuo Tanaka; Ken'ichi Tarusawa; Yuzuru Yoshii; Leonardo Bronfman; Maria T. Ruiz; Mario Hamuy
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Paper Abstract

We present the current status of the University of Tokyo Atacama 1.0-m telescope constructed at the summit of Co. Chajnantor (5,640 m) in Atacama, Chile, which is an optical/infrared telescope at the world's highest site. The telescope is an f/12 Ritchey-Chretien type with a field of view of 10 arcmin. It is installed in a 6-m dome and is controlled from the operation room in a container separated from the dome. The engineering first light observation was carried out in March 2009, and the astronomical observations have been carried out since June 2009. The pointing of the telescope is as accurate as 2.4 arcsec (RMS), showing good tracking accuracy of 0.2 arcsec for 60-s observation without guiding. The Hartmann constant is 0.19 arcsec and the image quality of the telescope is satisfactory for scientific observations. The best PSF obtained is 0.5 arcsec (FWHM) in optical, which demonstrates that the summit of Co. Chajnantor is one of the best seeing site in the world. Also the excellent atmospheric transmission in infrared wavelength at the site is proved by successful observations carried out by the ANIR near-infrared camera and the MAX38 mid-infrared instrument. In the near future, the operation room will be connected to the base support facility at San Pedro de Atacama for remote observation.

Paper Details

Date Published: 6 August 2010
PDF: 9 pages
Proc. SPIE 7733, Ground-based and Airborne Telescopes III, 773356 (6 August 2010); doi: 10.1117/12.856694
Show Author Affiliations
Takeo Minezaki, The Univ. of Tokyo (Japan)
Daisuke Kato, Japan Aerospace Exploration Agency (Japan)
Shigeyuki Sako, The Univ. of Tokyo (Japan)
Masahiro Konishi, The Univ. of Tokyo (Japan)
Shintaro Koshida, The Univ. of Tokyo (Japan)
Natsuko Mitani, The Univ. of Tokyo (Japan)
Tsutomu Aoki, Kiso Observatory, The Univ. of Tokyo (Japan)
Mamoru Doi, The Univ. of Tokyo (Japan)
Toshihiro Handa, The Univ. of Tokyo (Japan)
Yoshifusa Ita, Tokoku Univ. (Japan)
Kimiaki Kawara, The Univ. of Tokyo (Japan)
Kotaro Kohno, The Univ. of Tokyo (Japan)
Takashi Miyata, The Univ. of Tokyo (Japan)
Kentaro Motohara, The Univ. of Tokyo (Japan)
Takao Soyano, Kiso Observatory, The Univ. of Tokyo (Japan)
Toshihiko Tanabé, The Univ. of Tokyo (Japan)
Masuo Tanaka, The Univ. of Tokyo (Japan)
Ken'ichi Tarusawa, Kiso Observatory, The Univ. of Tokyo (Japan)
Yuzuru Yoshii, The Univ. of Tokyo (Japan)
Leonardo Bronfman, Univ. de Chile (Chile)
Maria T. Ruiz, Univ. de Chile (Chile)
Mario Hamuy, Univ. de Chile (Chile)

Published in SPIE Proceedings Vol. 7733:
Ground-based and Airborne Telescopes III
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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