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Simultaneous Observation of Multiple Temprature Components of the Solar Corona with a Mirror Coronagraph

Research Project

Project/Area Number 11640242
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Astronomy
Research InstitutionNational Astronomical Observatory

Principal Investigator

ICHIMOTO Kiyoshi  National Astronomical Observatory, Solar Physics Division, Assoc. Professor, 太陽物理学研究系, 助教授 (70193456)

Co-Investigator(Kenkyū-buntansha) KUMAGAI Kazuyoshi  National Astronomical Observatory, Norikura Solar Observatory, Research Associate, 乗鞍コロナ観測所, 助手 (50161691)
NISHINO Yohei  National Astronomical Observatory, Norikura Solar Observatory, Assoc. Professor, 乗鞍コロナ観測所, 助手 (40189296)
SUEMATSU Yoshinori  National Astronomical Observatory, Solar Physics Division, Assoc. Professor, 太陽物理学研究系, 助教授 (50171111)
HARA Hirohisa  National Astronomical Observatory, Solar Physics Division, Research Associate, 太陽物理学研究系, 助手 (20270457)
NOGUCHI Motokazu  National Astronomical Observatory, Norikura Solar Observatory, Research Associate, 乗鞍コロナ観測所, 助手 (40249941)
花岡 庸一郎  国立天文台, 電波天文学研究系, 助手 (10238040)
清水 敏文  国立天文台, 太陽物理学研究系, 助手 (60311180)
Project Period (FY) 1999 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,900,000)
Fiscal Year 2001: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 2000: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1999: ¥2,100,000 (Direct Cost: ¥2,100,000)
KeywordsSolar Corona / Coronagraph / Low scattering mirror / 超研磨鏡 / 太陽 / コロナ / 低散乱鏡
Research Abstract

Aiming for simultaneous observations of the solar corona in multiple wavelengths, and also for the construction of a large aperture coronagraph in future, we developed an engineering model of coronagraph with a 15-cm diameter mirror. The key technical terms are,
1) fabrication of a low-scattering mirror and the method of its qualification,
2) fabrication of the inverse occulting mirror with a hole,
3) active driving mechanism of the primary mirror for image stabilization.
The polishing of the off-axis paraboloidal primary mirror was performed in 2000 using a low-expansion glass. The system for evaluating the surface roughness of the mirror was also developed at the same time. The system measures the scattered component of laser beam in various angles, and we have performed the evaluation of the mirror in 2001.
The inverse occulting mirror was fabricated in 2003, but we met a deficit in the shape of the edge of the hole and investigated the improvement of the machining process.
In 2001 and 2002, the driving mechanism of the primary mirror was designed and two piezo actuators were tested for its fundamental functions.
Though the mirror coronagraph was not completed as an observation system, the prospect for the major technical issues were obtained.

Report

(4 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (26 results)

All Other

All Publications (26 results)

  • [Publications] Ichimoto, K., Nuguchi, M., Tanaka, N., Kumagai, K.et al.: "A New Imaging System of Coronal Green-Line at Norikura"Publ.Astron.Soc.Jpn.. 51. 383-391 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 野口本和, 一本潔, 田中伸幸, 熊谷收可, 篠田一也, 西野洋平, 他: "乗鞍コロナ観測所における緑色コロナ輝線撮像装置の開発"国立天文台報. 4巻4号. 221-229 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Li, Hui, Sakurai, T., Ichimoto, K., UeNo, S.: "Magnetic Field Evolution Leading to Solar Flares. I.Cases with Low Magnetic Shear and Flux Emergence"Publ.Astron.Soc.Jpn.. 52. 465-481 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Raju, K.P., Sakurai, T., Ichimoto, K., Singh, J.: "The Physical Conditions in a Polar Coronal Hole and nearby Regions from Norikura and SoHO Observations"Astrophys.J.. 543. 1044-1050 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Ichimoto, K., Singh, J.: "Observation of Coronal Oscillation and Waves"ASP Conference Series. 205. 11-16 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 篠田一也, 一本潔, 福田武夫, 辛準鎬: "乗鞍コロナ観測所における液晶遅延素子を用いた汎用偏光解析装置の開発"国立天文台報. 5巻3号. 97-106 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Ichimoto, K., Nuguchi, M., Tanaka, N., Kumagai, K., et al.: "A New Imaging System of Coronal Green-Line at Norikuta"Publ. Astron. Soc. Japan. 51. 383-391 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Li, Hui, Sakurai, T., Ichimoto, K., UeNo, S.: "Magnetic Field Evolution Leading to Solar Flares. I. Cases with Low Magnetic Shear and Flux Emergence"Publ. Astron. Soc. Japan. 52. 465-481 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Raju, K.P., Sakurai, T., Ichimoto, K., and Shingh, J.: "The Physical Conditions in a Polar Coronal Hole and nearby Regions from Norikura and SoHO Observations"Astrophys J.. 543. 1044-1050 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Ichimoto, K., and Shingh, J.: "Observation of Coronal Oscillation and Waves"ASP Conference Series. 205. 11-16 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] J. Singh, K. Ichimoto, H. Imai, T. Sakurai, A. Takeda: "Spectroscopic Studies of the Solar Corona I. Spatial Variations in Line Parameters of Green and Red Coronal Lines"Publ. Astron. Soc. Japan. 51. 269-276 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Hara, H., and Ichimoto, K.: "Microscopic Nonthermal Plasma Motions of Coronal Loops in a Solar Active Regions"Astrophys J.. 513. 969-982 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Yamasaki, K. Ichimoto, E. Hiei: "The Observation of the Coronal Velocity Field in a Flare"Res. Bul. Meisei Univ. Fac. Sci. Eng.. 38. 15-23 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Ichimoto, K., Nuguchi, M., Tanaka, N., Kumagai, K.et al.: "A New Imaging System of Coronal Green-Line at Norikura"Publ.Astron.Soc.Jpn.. 51. 383-391 (1999)

    • Related Report
      2001 Annual Research Report
  • [Publications] 野口本和, 一本潔, 田中伸幸, 熊谷收可, 篠田一也, 西野洋平, 他: "乗鞍コロナ観測所における緑色コロナ輝線撮像装置の開発"国立天文台報. 4巻4号. 221-229 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] Li, Hui, Sakurai, T., Ichimoto, K., UeNo, S.: "Magnetic Field Evolution Leading to Solar Flares. I. Cases with Low Magnetic Shear and Flux Emergence"Publ.Astron.Soc.Jpn.. 52. 465-481 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] Raju, K.P., Sakurai, T., Ichimoto, K., Singh, J.: "The Physical Conditions in a Polar Coronal Hole and nearby Regions from Norikura and SoHO Observations"Astrophys.J.. 543. 1044-1050 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] Ichimoto, K., Singh, J.: "Observation of Coronal Oscillation and Waves"ASP Conference Series. 205. 11-16 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] 篠田一也, 一本潔, 福田武夫, 辛準鎬: "乗鞍コロナ観測所における液晶遅延素子を用いた汎用偏光解析装置の開発"国立天文台報. 5巻3号. 97-106 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Raju,K.P. et al.: "The Physical Conditions in a Polar Coronal Hole and nearby Regions from Norikura abs SoHO Observations"Ap.J.. 543. 1044-1050 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 野口本和 他: "乗鞍コロナ観測所における緑色コロナ輝線撮像装置の開発"国立天文台報. 4巻4号. 221-229 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Ichimoto,K., et al.: "Observation of Coronal Oscillation and Waves"ASP Conference Series. 205. 11-16 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Li,Hui et al.: "Magnetic Field Evolution Leading to Solar Flares I.Cases with Low Magnetic Shear and Flux Emergence"Publ.Astron.Soc.Japan. 52. 465-481 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Hanaoka et al.: "Radio and X-Ray Observations of Double Loop Flares"Advances in Space Research. 26. 453-456 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] K. Ichimoto et.al.: "A New Imaging System of the Corona at Norikura"Publ. Astron. Soc. Japan. 51. 383-391 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 野口本和 他: "乗鞍コロナ観測所における緑色コロナ輝線撮像装置の開発"国立天文台報. 4. 221-229 (2000)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2017-10-12  

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