Development of Solar-C_EUVST structural design

Yoshinori Suematsu; Toshifumi Shimizu; Hirohisa Hara; Yukio Katsukawa; Tomoko Kawate; Kiyoshi Ichimoto; Shinsuke Imada

doi:10.1117/12.2529010

9 September 2019 Development of Solar-C_EUVST structural design

Yoshinori Suematsu, Toshifumi Shimizu, Hirohisa Hara, Yukio Katsukawa, Tomoko Kawate, Kiyoshi Ichimoto, Shinsuke Imada

Proceedings Volume 11118, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI; 111181O (2019) https://doi.org/10.1117/12.2529010
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

The Solar-C_EUVST is a mission designed to provide high-quality solar spectroscopic data covering a wide temperature range of the chromosphere to flaring corona. To fulfill a high throughput requirement, the instrument consists of only two optical components; a 28-cm primary mirror and a segmented toroidal grating which have high reflective coatings in EUV-UV range. We present a mission payload structural design which accommodates long focal length optical components and a launcher condition/launch environment (JAXA Epsilon). We also present a mechanical design of primary mirror assembly which enables slit-scan observations, an image stabilizing tip-tilt control, and a focus adjustment on orbit, together with an optomechanical design of the primary mirror and its supporting system which gives optically tolerant wavefront error against a large temperature increase due to an absorption of visible and IR lights.

Citation Download Citation

Yoshinori Suematsu, Toshifumi Shimizu, Hirohisa Hara, Yukio Katsukawa, Tomoko Kawate, Kiyoshi Ichimoto, and Shinsuke Imada "Development of Solar-C_EUVST structural design", Proc. SPIE 11118, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI, 111181O (9 September 2019); https://doi.org/10.1117/12.2529010

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