Society of Photo-Optical Instrumentation Engineers
Society of Photo-Optical Instrumentation Engineers
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发表时间：
2005
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通讯作者：
M. Langlois;G. Moretto;K. Richards;S. Hegwer
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作者：
M. Langlois;G. Moretto;K. Richards;S. Hegwer
我们在这里报告的Dunn太阳望远镜（DST/NSO MCAO）的多共轭自适应光学（MCAO）系统获得的初步结果和光学设置和性能在Moretto等人。该系统依赖于层析成像技术，其中使用三个WFS，每个WFS都耦合到太阳的颗粒和/或太阳黑子的扩展图像，以检索湍流体积的3D测量，以便命令两个DM。我们使用5x 5子孔径Shack-Hartmann，并在1.25“全FOV内的三个18”宽的选定引导区域上应用互相关。我们还报告了湍流分布的估计和未来的MCAO性能的基础上使用邓恩太阳望远镜自适应光学系统的一个单独的层析波前传感实验。此外，我们得到的湍流分布的估计。本文的研究结果为Dunn太阳望远镜和未来4米ATST望远镜的全太阳多共轭自适应光学系统的建设迈出了重要的一步。
We report here the preliminary results obtained with the multi-conjugate adaptive optics (MCAO) system at the Dunn Solar Telescope (DST/NSO MCAO) and the optical setup and performances are presented in more details in Moretto et al. in this proceeding. This system relies on the tomography technique, in which three WFS are used, each of them coupled to extended images of the Sun’s granulation and/or sunspots, to retrieve a 3D measurement of the turbulent volume in order to command the two DMs. We used a 5x5 subaperture Shack-Hartmann with cross correlation applied on three selected guiding regions 18'' widewithin the 1.25' full FOV. We also report on the estimation of turbulence distribution and the future MCAO performances based on a separate tomographic wavefront sensing experiment using the Dunn Solar Telescope adaptive optics system. In addition, we obtained estimates of the turbulence distribution. The results from this article provides an important step forward for building a full solar multi-conjugate adaptive optics system for the Dunn Solar Telescope and in the long term for the future 4 meter ATST telescope.