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Proceedings Paper

The Infrared Imaging Spectrograph (IRIS) for TMT: prototyping of cryogenic compatible stage for the imager
Author(s): Fumihiro Uraguchi; Yoshiyuki Obuchi; Bungo Ikenoue; Sakae Saito; Ryuji Suzuki; Yutaka Hayano
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Paper Abstract

The IRIS Imager requires opt-mechanical stages which are operable under vacuum and cryogenic environment. Also the stage for the IRIS Imager is required to survive for 10 years without maintenance. To achieve the development goal, we decided prototyping of a two axis stage with 80 mm clear aperture. The prototype was designed as a double-deck stage, upper rotary stage and lower linear stage. Most of components are selected to take advantage of heritage from existing astronomical instruments. In contrast, mechanical components with lubricants such as bearings, linear motion guides and ball screws were modified to survive cryogenic environment. The performance proving test was carried out to evaluate errors such as wobbling, rotary and linear positioning error. Also durability test under anticipated load condition has been conducted. In this article, we report the detail of mechanical design, fabrication, performance and durability of the prototype.

Paper Details

Date Published: 9 August 2016
PDF: 10 pages
Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 9908A8 (9 August 2016); doi: 10.1117/12.2233902
Show Author Affiliations
Fumihiro Uraguchi, National Astronomical Observatory of Japan (Japan)
Yoshiyuki Obuchi, National Astronomical Observatory of Japan (Japan)
Bungo Ikenoue, National Astronomical Observatory of Japan (Japan)
Sakae Saito, National Astronomical Observatory of Japan (Japan)
Ryuji Suzuki, National Astronomical Observatory of Japan (Japan)
Yutaka Hayano, National Astronomical Observatory of Japan (Japan)


Published in SPIE Proceedings Vol. 9908:
Ground-based and Airborne Instrumentation for Astronomy VI
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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