The Infrared Imaging Spectrograph (IRIS) for TMT: prototyping of cryogenic compatible stage for the imager

Fumihiro Uraguchi; Yoshiyuki Obuchi; Bungo Ikenoue; Sakae Saito; Ryuji Suzuki; Yutaka Hayano

doi:10.1117/12.2233902

9 August 2016 The Infrared Imaging Spectrograph (IRIS) for TMT: prototyping of cryogenic compatible stage for the imager

Fumihiro Uraguchi, Yoshiyuki Obuchi, Bungo Ikenoue, Sakae Saito, Ryuji Suzuki, Yutaka Hayano

Author Affiliations +

Proceedings Volume 9908, Ground-based and Airborne Instrumentation for Astronomy VI; 9908A8 (2016) https://doi.org/10.1117/12.2233902
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

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.

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Fumihiro Uraguchi, Yoshiyuki Obuchi, Bungo Ikenoue, Sakae Saito, Ryuji Suzuki, and Yutaka Hayano "The Infrared Imaging Spectrograph (IRIS) for TMT: prototyping of cryogenic compatible stage for the imager", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 9908A8 (9 August 2016); https://doi.org/10.1117/12.2233902

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