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

用镜面日冕仪同时观测日冕的多个温度分量

• 批准号: 11640242
• 负责人: ICHIMOTO Kiyoshi
• 金额: $ 2.5万
• 依托单位: National Astronomical Observatory
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11640242/
• 关键词: Solar Corona; Coronagraph; Low scattering mirror; 超研磨鏡; 太陽; コロナ; 低散乱鏡

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.

为了在多个波长中同时观察太阳能电晕，并在将来建造大型孔径冠状动物时，我们开发了一种带有15厘米直径镜的coronagraph工程模型。关键的技术术语是：1）制造低散射镜及其资格的方法，2）用一个孔制造逆掩盖镜子，3）主镜的主动驾驶机制以进行图像稳定。使用低膨胀玻璃在2000年在2000年进行了离轴抛物面镜。还同时开发了评估镜面表面粗糙度的系统。该系统以各种角度测量激光束的散射成分，我们在2001年进行了对镜像的评估。2003年制造了反向掩盖镜，但我们遇到了孔边缘形状的不足并研究了。加工过程的改进。在2001年和2002年，设计了主镜的驾驶机制，并对两个压电执行器进行了基本功能测试。尽管镜子冠冕尚未作为观察系统完成，这是主要技术的前景获得了问题。

项目成果

Ichimoto,K., et al.: "Observation of Coronal Oscillation and Waves"ASP Conference Series. 205. 11-16 (2000)

Ichimoto,K. 等人：“日冕振荡和波的观察”ASP 会议系列。

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)

Ichimoto, K.、Nuguchi, M.、Tanaka, N.、Kumagai, K.等人：“Norikura 日冕绿线的新成像系统”Publ.Astron.Soc.Jpn.. 51. 383-391

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)

T. Yamasaki、K. Ichimoto、E. Hiei：“耀斑中日冕速度场的观测”Res。

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)

Li, Hui, Sakurai, T., Ichimoto, K., UeNo, S.：“磁场演化导致太阳耀斑。I.低磁剪切和通量出现的情况”Publ。

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)

Li, Hui, Sakurai, T., Ichimoto, K., UeNo, S.：“磁场演化导致太阳耀斑。I.低磁剪切和通量出现的案例”Publ.Astron.Soc.Jpn.. 52。