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Proceedings Paper

Design of mirror coating facility for The University of Tokyo Atacama Observatory 6.5m telescope
Author(s): Hidenori Takahashi; Tsutomu Aoki; Mamoru Doi; Toshihiro Handa; Takafumi Kamizuka; Natsuko M. Kato; Kimiaki Kawara; Kotaro Kohno; Masahiro Konishi; Shintaro Koshida; Takeo Minezaki; Takashi Miyata; Tomoki Morokuma; Kentaro Motohara; Shigeyuki Sako; Takao Soyano; Yoishi Tamura; Toshihiro Tanabé; Masuo Tanaka; Ken'ichi Tarusawa; Yuzuru Yoshii
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Paper Abstract

The telescope of the University of Tokyo Atacama Observatory has a 6.5-m primary mirror in diameter. In order to fabricate the reflecting film initially and to maintain its performance over a long period, we have mirror coating facility on site. We have chosen to leave the primary mirror in its cell with the mirror support system intact. Two major advantages of leaving the mirror in its cell are that the mirror does not have to be lifted or handled and the support system does not have to be removed or reinstalled for coating. The facility consists of a clean booth for stripping of the old film, an evaporation coating chamber, and a cart with a lifter for handling the primary mirror. A conventional evaporation system with a metal pre-wetted filament array is adopted for achieving various optical requests. The coating equipment has also a function of fabrication for film on secondary and tertiary mirrors.

Paper Details

Date Published: 22 July 2014
PDF: 8 pages
Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 91454N (22 July 2014); doi: 10.1117/12.2055577
Show Author Affiliations
Hidenori Takahashi, The Univ. of Tokyo (Japan)
Tsutomu Aoki, The Univ. of Tokyo (Japan)
Kiso Observatory, The Univ. of Tokyo (Japan)
Mamoru Doi, The Univ. of Tokyo (Japan)
Toshihiro Handa, Kagoshima Univ. (Japan)
Takafumi Kamizuka, The Univ. of Tokyo (Japan)
Natsuko M. Kato, The Univ. of Tokyo (Japan)
Kimiaki Kawara, The Univ. of Tokyo (Japan)
Kotaro Kohno, The Univ. of Tokyo (Japan)
Masahiro Konishi, The Univ. of Tokyo (Japan)
Shintaro Koshida, Pontificia Univ. Católica de Chile (Chile)
Takeo Minezaki, The Univ. of Tokyo (Japan)
Takashi Miyata, The Univ. of Tokyo (Japan)
Tomoki Morokuma, The Univ. of Tokyo (Japan)
Kentaro Motohara, The Univ. of Tokyo (Japan)
Shigeyuki Sako, The Univ. of Tokyo (Japan)
Takao Soyano, The Univ. of Tokyo (Japan)
Kiso Observatory, The Univ. of Tokyo (Japan)
Yoishi Tamura, The Univ. of Tokyo (Japan)
Toshihiro Tanabé, The Univ. of Tokyo (Japan)
Masuo Tanaka, The Univ. of Tokyo (Japan)
Ken'ichi Tarusawa, The Univ. of Tokyo (Japan)
Kiso Observatory, The Univ. of Tokyo (Japan)
Yuzuru Yoshii, The Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 9145:
Ground-based and Airborne Telescopes V
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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