The solar optical telescope of Solar-B (Hinode): The optical telescope assembly

The Solar Optical Telescope (SOT) aboard the Solar-B satellite (Hinode) is designed to perform high-precision photometric and polarimetric observations of the Sun in visible light spectra (388-668 nm) with a spatial resolution of 0.2-0.3 arcsec. The SOT consists of two optically separable components: the Optical Telescope Assembly (OTA), consisting of a 50-cm aperture Gregorian with a collimating lens unit and an active tip-tilt mirror, and an accompanying Focal Plane Package (FPP), housing two filtergraphs and a spectro-polarimeter. The optomechanical and optothermal performance of the OTA is crucial to attain unprecedented high-quality solar observations. We describe in detail the instrument design and expected stable diffraction-limited on-orbit performance of the OTA, the largest state-of-the-art solar telescope yet flown in space.

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An edited version of this paper was published by Springer. Copyright 2008, Springer Netherlands
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Author Suematsu, Y.
Tsuneta, S.
Ichimoto, K.
Shimizu, T.
Otsubo, M.
Katsukawa, Y.
Nakagiri, M.
Noguchi, M.
Tamura, T.
Kato, Y.
Hara, H.
Kubo, Masahito
Mikami, I.
Saito, H.
Matsushita, T.
Kawaguchi, N.
Nakaoji, T.
Nagae, K.
Shimada, S.
Takeyama, N.
Yamamuro, T.
Publisher UCAR/NCAR - Library
Publication Date 2008-06-01T00:00:00
Digital Object Identifier (DOI) Not Assigned
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Topic Category geoscientificInformation
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Metadata Date 2025-07-17T15:57:44.730296
Metadata Record Identifier edu.ucar.opensky::articles:6415
Metadata Language eng; USA
Suggested Citation Suematsu, Y., Tsuneta, S., Ichimoto, K., Shimizu, T., Otsubo, M., Katsukawa, Y., Nakagiri, M., Noguchi, M., Tamura, T., Kato, Y., Hara, H., Kubo, Masahito, Mikami, I., Saito, H., Matsushita, T., Kawaguchi, N., Nakaoji, T., Nagae, K., Shimada, S., Takeyama, N., Yamamuro, T.. (2008). The solar optical telescope of Solar-B (Hinode): The optical telescope assembly. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d7hq403w. Accessed 11 August 2025.

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