Solar Physics

, Volume 249, Issue 2, pp 197–220 | Cite as

The Solar Optical Telescope of Solar-B (Hinode): The Optical Telescope Assembly

  • Y. Suematsu
  • S. Tsuneta
  • K. Ichimoto
  • T. Shimizu
  • M. Otsubo
  • Y. Katsukawa
  • M. Nakagiri
  • M. Noguchi
  • T. Tamura
  • Y. Kato
  • H. Hara
  • M. Kubo
  • I. Mikami
  • H. Saito
  • T. Matsushita
  • N. Kawaguchi
  • T. Nakaoji
  • K. Nagae
  • S. Shimada
  • N. Takeyama
  • T. Yamamuro
Article

Abstract

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.

Keywords

Sun: instrumentation Sun: space telescope Sun: visible light 

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Y. Suematsu
    • 1
  • S. Tsuneta
    • 1
  • K. Ichimoto
    • 1
  • T. Shimizu
    • 2
  • M. Otsubo
    • 1
  • Y. Katsukawa
    • 1
  • M. Nakagiri
    • 1
  • M. Noguchi
    • 1
  • T. Tamura
    • 1
  • Y. Kato
    • 1
  • H. Hara
    • 1
  • M. Kubo
    • 2
  • I. Mikami
    • 3
  • H. Saito
    • 3
  • T. Matsushita
    • 3
  • N. Kawaguchi
    • 3
  • T. Nakaoji
    • 3
  • K. Nagae
    • 3
  • S. Shimada
    • 4
  • N. Takeyama
    • 5
  • T. Yamamuro
    • 5
  1. 1.National Astronomical Observatory of JapanMitakaJapan
  2. 2.Institute of Space and Aeronautical ScienceJAXASagamiharaJapan
  3. 3.Communication Systems CenterMELCOAmagasakiJapan
  4. 4.Kamakura WorksMELCOKamakuraJapan
  5. 5.Genesia CorporationMitakaJapan
  6. 6.High Altitude ObservatoryNational Center for Atmospheric ResearchBoulderUSA

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