22 July 2014 High volume production trial of mirror segments for the Thirty Meter Telescope
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Abstract
The Thirty Meter Telescope is a next-generation optical/infrared telescope to be constructed on Mauna Kea, Hawaii toward the end of this decade, as an international project. Its 30 m primary mirror consists of 492 off-axis aspheric segmented mirrors. High volume production of hundreds of segments has started in 2013 based on the contract between National Astronomical Observatory of Japan and Canon Inc.. This paper describes the achievements of the high volume production trials. The Stressed Mirror Figuring technique which is established by Keck Telescope engineers is arranged and adopted. To measure the segment surface figure, a novel stitching algorithm is evaluated by experiment. The integration procedure is checked with prototype segment.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tetsuji Oota, Tetsuji Oota, Mahito Negishi, Mahito Negishi, Hirohiko Shinonaga, Hirohiko Shinonaga, Akihiko Gomi, Akihiko Gomi, Yutaka Tanaka, Yutaka Tanaka, Kotaro Akutsu, Kotaro Akutsu, Itaru Otsuka, Itaru Otsuka, Shun Mochizuki, Shun Mochizuki, Masanori Iye, Masanori Iye, Takuya Yamashita, Takuya Yamashita, } "High volume production trial of mirror segments for the Thirty Meter Telescope", Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 91451J (22 July 2014); doi: 10.1117/12.2055591; https://doi.org/10.1117/12.2055591
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