AOLI: Adaptive Optics Lucky Imager: diffraction limited imaging in the visible on large ground-based telescopes

AOLI: Adaptive Optics Lucky Imager: diffraction limited imaging in the visible on large ground-based telescopes
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AOLI:自适应光学幸运成像仪:大型地面望远镜可见光中的衍射受限成像

DOI:
10.1117/12.925618
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发表时间:
2012
期刊:
--
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通讯作者:
Mackay C
Mackay C
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作者:
Mackay C

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有史以来最高分辨率的可见光图像是通过Lucky Imaging和低阶自适应光学相结合获得的。本文介绍了将部署在La Palma的WHT 4.2m和GTC 10.4 m望远镜上的一种新仪器,重点介绍了光学设计和预期的系统性能。使用光子计数CCD探测器和多平面曲率波前传感器的一种新设计的低阶波前传感器将允许使用明显较暗的参考星,从而使自然导星几乎覆盖整个天空。本文还描述了Lucky成像效率的显著提高,曲率传感器在波前重建方面的重要进展,以及模拟和灵敏度限制的结果。AOLI有一个2 × 2的1024 × 1024光子计数emccd阵列,很可能是第一个新型高灵敏度、接近衍射限制的成像系统,从地面上获得的可见分辨率比迄今为止从太空中可能获得的更高。
The highest resolution images ever taken in the visible were obtained by combining Lucky Imaging and low order adaptive optics. This paper describes a new instrument to be deployed on the WHT 4.2m and GTC 10.4 m telescopes on La Palma, with particular emphasis on the optical design and the expected system performance. A new design of low order wavefront sensor using photon counting CCD detectors and multi-plane curvature wavefront sensor will allow dramatically fainter reference stars to be used, allowing virtually full sky coverage with a natural guide star. This paper also describes a significant improvements in the efficiency of Lucky Imaging, important advances in wavefront reconstruction with curvature sensors and the results of simulations and sensitivity limits. With a 2 x 2 array of 1024 x 1024 photon counting EMCCDs, AOLI is likely to be the first of the new class of high sensitivity, near diffraction limited imaging systems giving higher resolution in the visible from the ground than hitherto been possible from space.
自适应光学系统的 Strehl 效率
DOI: --
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期刊:
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