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首页> 外文会议>Advances in Adaptive Optics II pt.3 >Long Exposure Point Spread Function Estimation from Adaptive Optics Loop Data: Validation and Results
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Long Exposure Point Spread Function Estimation from Adaptive Optics Loop Data: Validation and Results

机译：自适应光学环路数据的长曝光点扩展函数估计：验证和结果

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Adaptive Optics systems have revolutionized ground based astronomy by providing real time correction for atmospheric aberrations. However, due to limited temporal and spatial bandwidth the correction provided is not perfect. With knowledge of the Point Spread Function correction can be further improved. The lack of point sources in Solar observations makes a direct measurement of the PSF impossible. We present a method to obtain a PSF estimate from the Adaptive Optics system loop telemetry. Using this method we can obtain a PSF for each captured AO corrected image and correct each image individually. We applied this method to a long time series of Solar data obtaining satisfactory results. Also in an attempt to validate this method we successfully observed the star Sirius with the Dunn Solar Telescope. The AO corrected star images provide a direct measurement of the PSF that can be compared to our estimates obtained from the AO telemetry data.
机译：自适应光学系统通过实时校正大气像差，彻底改变了地面天文学。然而，由于有限的时间和空间带宽，所提供的校正并不完美。有了点扩展函数的知识，可以进一步改善校正。太阳观测缺乏点源，因此无法直接测量PSF。我们提出一种从自适应光学系统环路遥测中获得PSF估计的方法。使用这种方法，我们可以获得每个捕获的AO校正图像的PSF，并分别校正每个图像。我们将此方法应用于长时间的Solar数据序列，获得令人满意的结果。同样，为了验证这种方法，我们用邓恩太阳望远镜成功观测了天狼星。 AO校正后的恒星图像可直接测量PSF，并将其与我们从AO遥测数据获得的估计值进行比较。

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