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Proceedings Paper • Open Access

Instrument design and on-orbit performance of the solar optical telescope aboard hinode (Solar-B)
Author(s): Yoshinori Suematsu; Kiyoshi Ichimoto; Yukio Katsukawa; Saku Tsuneta; Toshifumi Shimizu

Paper Abstract

The Solar Optical Telescope (SOT) aboard Solar-B satellite (Hinode) is designed to perform high-precision photometric and polarimetric observations of the solar lower atmosphere in visible light spectra (388--668 nm) with a spatial resolution of 0.2 to 0.3 arcsec. The SOT consists of two components; the optical telescope assembly (OTA) consisting of a 50-cm aperture Gregorian telescope with a collimating lens unit and an active tip-tilt mirror for an image-stabilization and an accompanying focal plane package (FPP) housing two filtergraphs and a spectro-polarimeter. Since its first-light observation on 25 Oct. 2006, the image-stabilization system has been working with performance better than 0.01 arcsec rms and the SOT has been continuously providing unprecedented solar data of high spatial resolution. Since the opto-mechanical and -thermal performance of the OTA is crucial to attain unprecedented high-quality solar observations, we here describe in detail the instrument design and on-orbit diffraction-limit performance of the OTA, the largest state-of-the-art solar telescope yet flown in space.

Paper Details

Date Published: 21 November 2017
PDF: 8 pages
Proc. SPIE 10566, International Conference on Space Optics — ICSO 2008, 105662Z (21 November 2017); doi: 10.1117/12.2308204
Show Author Affiliations
Yoshinori Suematsu, National Astronomical Observatory of Japan (Japan)
Kiyoshi Ichimoto, Kyoto Univ. (Japan)
Yukio Katsukawa, National Astronomical Observatory of Japan (Japan)
Saku Tsuneta, National Astronomical Observatory of Japan (Japan)
Toshifumi Shimizu, Institute of Space and Astronautical Science (Japan)

Published in SPIE Proceedings Vol. 10566:
International Conference on Space Optics — ICSO 2008
Josiane Costeraste; Errico Armandillo; Nikos Karafolas, Editor(s)

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