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Development of an Adaptive Optics System for the Solar Observation

太阳观测自适应光学系统的开发

基本信息

批准号：
16340060
负责人：
HANAOKA Yoichiro
金额：
$ 8.58万
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 (B)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16340060/
关键词：
Solar Physics Adaptive Optics System

项目摘要

To investigate the various active phenomena occurring in the solar atmosphere is scientifically very important because they are the basic phenomena in the stellar atmosphere and also they show the plasma phenomena which cannot be reproduced in a laboratory, and furthermore, they affect the plasma environment of the earth much. To study such active phenomena, it is essentially important to observe the surface structure of the sun with a high spatial resolution. The adaptive optics is the key technology to get high resolution in the ground-base observation. We have been developing an adaptive optics system for the solar observation to realize the observation at the diffraction limit resolution with a 1-m class telescope in near future.We firstly designed the outline of the adaptive optics system, and introduced a deformable mirror which is the key device for the wavefront control. The control parameters for the deformable mirror were obtained from an experiment to establish the relation … More between the applied control signal to the mirror and the corresponding wavefront change measured with an interferrometer. Since the actual calculation of the wavefront and the control of the mirror require a high-speed (several hundred cycles per second), we developed a high-speed real-time software. Finally we completed the integration of the system.We attached our system to the Domeless Solar Telescope of the Hida Observatory, Kyoto, which is a 60-cm solar telescope, to test the system with the real solar images. Unfortunately, sometimes we could not find any sunspot, which is the reference to measure the wavefront, because it was near the solar minimum, but we finally confirmed that each component of the adaptive optics system is working well.We gave presentations in some scientific meetings on our development of the adaptive optics system.For further development of the adaptive optics system, we are discussing on the collaboration with the Kyoto University and the Kitami Institute of Technology. Less

研究太阳大气中的各种活动现象具有重要的科学意义，因为它们是恒星大气中的基本现象，也是实验室无法再现的等离子体现象，而且它们对地球的等离子体环境有很大的影响。要研究这种活动现象，以高空间分辨率观测太阳表面结构至关重要。自适应光学是地面观测中获得高分辨率的关键技术。为了在不久的将来利用1m级望远镜实现衍射极限分辨率的观测，我们正在研制一种用于太阳观测的自适应光学系统。首先设计了自适应光学系统的轮廓，并介绍了波前控制的关键器件--变形镜。通过建立…关系的实验，得到了变形镜的控制参数施加到反射镜的控制信号和用干涉仪测量的相应波前变化之间的更多差异。由于实际波前的计算和反射镜的控制都需要很高的速度(几百个周期/秒)，所以我们开发了一个高速实时软件。最后完成了系统的集成。我们将系统安装在京都日田天文台的无领域太阳望远镜上，这是一个60厘米的太阳望远镜，用真实的太阳图像对系统进行测试。不幸的是，有时我们找不到任何太阳黑子，它是测量波前的参考，因为它接近太阳最小值，但我们最终确认自适应光学系统的每个组件工作正常。我们在一些科学会议上介绍了我们开发自适应光学系统的情况。为了进一步开发自适应光学系统，我们正在与京都大学和北上工业大学讨论合作事宜。较少