Development of software for a practical adaptive optics system based on personal computers

基于个人计算机的实用自适应光学系统软件的开发

• 批准号: 17540209
• 负责人: MIURA Noriaki
• 金额: $ 1.86万
• 依托单位: Kitami Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17540209/
• 关键词: Adaptive Optics; Solar Observation

We designed and built the optical setup of the adaptive optics (AO) system. Also, we developed the software needed for the AO system. By virtue of original fast algorithms of image processing, we attained the working frequency of about 400 Hz.We investigate the AO system through laboratory experiments, and then confirmed that it worked well for compensating turbulence of less than 99Hz. The average cross-correlation vale rose from 0.67 to 0.83, and the Strehl ratio increased from 0.12 to 0.58.A theoretical analysis of the system performance showed that the cutoff frequency of the AO system is 105 Hz, which agreed well with the experimental result (99 Hz).We applied the AO system to solar observations at the Hida Observatory, and confirmed that the AO system worked effectively in seeing condition of D/r0=14. The contrast of solar images rose from 0.036 to 0.041 with use of the AO system.Assessing these results, we investigated the performance of a practical AO system for solar observation at the Hida Observatory.We found that the working frequency had to be improved further and a new deformable mirror was necessary with more than 50 channels and larger stroke.We published our paper in the journal "Optical Review" and presented our results in the Astronomical Society of Japan (2), Solar-research meetings (2), the Optical Society of Japan (2).

设计并搭建了自适应光学系统的光学系统。此外，我们还开发了AO系统所需的软件。利用原有的图像处理快速算法，获得了400 Hz左右的工作频率，并通过实验室实验对该自适应光学系统进行了研究，证实了该系统对小于99 Hz的湍流具有良好的补偿效果。平均互相关值从0.67提高到0.83，Strehl比从0.12提高到0.58。理论分析表明，该系统的截止频率为105 Hz，与实验结果（99 Hz）基本一致。并证实了AO系统在D/r 0 =14视宁度条件下的有效工作。使用AO系统后，太阳图像的对比度从0.036上升到0.041。我们对希达天文台的一个实用的太阳观测AO系统的性能进行了研究。我们发现，需要进一步提高工作频率，并需要一个新的变形镜，其通道数超过50个，行程更大。我们的论文发表在《光学评论》杂志上。并在日本天文学会（2）、太阳研究会议（2）、日本光学学会（2）上介绍了我们的结果。

项目成果

Solar adaptive optics system based on software control

基于软件控制的太阳自适应光学系统

• 发表时间: 2006
• 期刊: Optical Review 13
• 作者: N. Miura;T. Kobayashi;S. Sakuma;S. Kuwamura;N. Baba;Y. Hanaoka;S. Ueno and R. Kitai
• 通讯作者: S. Ueno and R. Kitai