29 July 2016 Development of compact metal-mirror image slicer unit for optical telescope of the SOLAR-C mission
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Abstract
To realize an integral field unit (IFU) for a one-meter class optical telescope (SUVIT) on board Japanese next solar mission (SOLAR-C), we studied an optical design and manufacturing method to attain high optical performances for IFU, using a novel manufacturing technique developed by Canon. The IFU consists of micro-image slicer of 45 arrayed 30-micron-thick metal mirrors and a pseudo-pupil mirror array for making three pseudo-slits, providing possible optical configuration for a coexistence with a usual slit spectrograph without movable mechanism. The IFU mirrors were deposited by a protected silver coating for high reflectivity in visible and near IR wavelength region. We present the optical design, performance of prototype IFU and space qualification tests of the silver coating.
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Y. Suematsu, Y. Suematsu, K. Saito, K. Saito, M. Koyama, M. Koyama, Y. Enokida, Y. Enokida, Y. Okura, Y. Okura, T. Nakayasu, T. Nakayasu, T. Sukegawa, T. Sukegawa, } "Development of compact metal-mirror image slicer unit for optical telescope of the SOLAR-C mission", Proc. SPIE 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 990411 (29 July 2016); doi: 10.1117/12.2231947; https://doi.org/10.1117/12.2231947
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