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Proceedings Paper

Overview of key technologies for TMT telescope structure
Author(s): Yutaka Ezaki; Atsushi Kato; Tomoya Hattori; Yusuke Saruta; Satoru Sofuku; Toshitaka Nakaoji; Noboru Kawaguchi; Junji Takaki; Yasushi Horiuchi; Masaki Haruna; Masaki Tabata; Yoshihiro Hosokawa; Hiroshi Kusumoto; Tomonori Usuda
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Paper Abstract

For the Thirty Meter Telescope (TMT) that aims high-resolution and high-sensitivity observations for optical-infrared astronomy, detailed design is underway for Telescope Structure System (STR) including the mount control system and the segment handling system. The technical requirements for the STR system are very challenging on its performance and interface condition with telescope-mounted optics and observation instruments. The major challenging technical requirements include low flexure of mirror support structure and low optical path length variation due to gravitational deformation, high seismic performance against large earthquake, very accurate mount drive control for high tracking and guiding performance, and fast, safe and labor-saving segment exchange. To meet these technical requirements, Mitsubishi Electric Corporation (MELCO) has made a detailed design and technology development. In this paper, overview of major key technologies is introduced that is adopted for the TMT telescope structure in the detailed design and technology development.

Paper Details

Date Published: 27 July 2016
PDF: 16 pages
Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 99060Y (27 July 2016); doi: 10.1117/12.2233847
Show Author Affiliations
Yutaka Ezaki, Mitsubishi Electric Corp. (Japan)
Atsushi Kato, Mitsubishi Electric Corp. (Japan)
Tomoya Hattori, Mitsubishi Electric Corp. (Japan)
Yusuke Saruta, Mitsubishi Electric Corp. (Japan)
Satoru Sofuku, Mitsubishi Electric Corp. (Japan)
Toshitaka Nakaoji, Mitsubishi Electric Corp. (Japan)
Noboru Kawaguchi, Mitsubishi Electric Corp. (Japan)
Junji Takaki, Mitsubishi Electric Corp. (Japan)
Yasushi Horiuchi, Mitsubishi Electric Corp. (Japan)
Masaki Haruna, Mitsubishi Electric Corp. (Japan)
Masaki Tabata, Mitsubishi Electric Corp. (Japan)
Yoshihiro Hosokawa, Mitsubishi Electric Corp. (Japan)
Hiroshi Kusumoto, National Astronomical Observatory of Japan (Japan)
Tomonori Usuda, National Astronomical Observatory of Japan (Japan)

Published in SPIE Proceedings Vol. 9906:
Ground-based and Airborne Telescopes VI
Helen J. Hall; Roberto Gilmozzi; Heather K. Marshall, Editor(s)

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