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arXiv 1202.3486astro-ph.IM
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自适应光学系统PSF首次成功重建。M.凯克天文台

First Successful Adaptive Optics PSF Reconstruction at W. M. Keck Observatory

Laurent Jolissaint, Chris Neyman, Julian Christou, Peter Wizinowich, Laurent Mugnier

摘要:

我们提出了我们的PSF重建(PSF-R)项目的最后结果,在自然导星模式下的Pakk-II和Gemini-North AO系统。我们的初步测试表明,PSF-R的最关键的方面是系统静态像差和光学湍流参数的确定,我们已经建立了一个具体的观察活动,对这两个系统进行了探索。实验结果表明,基于变形镜的视宁度监测器工作良好,可以很容易地获得10%的精度。相位分集已经被证明对天空源起作用。此外,剩余相位平稳性是PSF-R中的一个重要假设,我们在这里证明了它基本上是正确的。作为这些测试和验证的结果,我们已经能够第一次在明亮的自然导星模式下获得非常好的PSF-II系统的PSF重建。

英文摘要:

We present the last results of our PSF reconstruction (PSF-R) project for the Keck-II and Gemini-North AO systems in natural guide star mode. Our initial tests have shown that the most critical aspects of PSF-R are the determination of the system static aberrations and the optical turbulence parameters, and we have set up a specific observation campaign on the two systems to explore this. We demonstrate that deformable mirror based seeing monitor works well, and 10% accuracy is easily obtained. Phase diversity has been demonstrated to work on sky sources. Besides, residual phase stationarity is an important assumption in PSF-R, and we demonstrate here that it is basically true. As a result of these tests and verifications, we have been able for the first time to obtain a very good PSF reconstruction for the Keck-II system, in bright natural guide star mode.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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