The highest resolution images ever taken in the visible were obtained bycombining Lucky Imaging and low order adaptive optics. This paper describes anew instrument to be deployed on the WHT 4.2m and GTC 10.4 m telescopes on LaPalma, with particular emphasis on the optical design and the expected systemperformance. A new design of low order wavefront sensor using photon countingCCD detectors and multi-plane curvature wavefront sensor will allowdramatically fainter reference stars to be used, allowing virtually full skycoverage with a natural guide star. This paper also describes a significantimprovements in the efficiency of Lucky Imaging, important advances inwavefront reconstruction with curvature sensors and the results of simulationsand sensitivity limits. With a 2 x 2 array of 1024 x 1024 photon countingEMCCDs, AOLI is likely to be the first of the new class of high sensitivity,near diffraction limited imaging systems giving higher resolution in thevisible from the ground than hitherto been possible from space.
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机译:通过结合幸运成像和低阶自适应光学器件,可以获得在可见光中拍摄的最高分辨率图像。本文介绍了一种将在LaPalma上的WHT 4.2m和GTC 10.4 m望远镜上部署的新仪器,特别着重于光学设计和预期的系统性能。一种采用光子计数CCD探测器和多平面曲率波阵面传感器的低阶波阵面传感器的新设计将允许使用戏剧性更暗的参考星,从而利用自然的导星实现几乎完全的天空覆盖。本文还描述了幸运成像效率的显着提高,曲率传感器在波前重建中的重要进展以及模拟结果和灵敏度极限。 AOLI拥有2 x 2的1024 x 1024光子计数EMCCD阵列,很可能是新型的高灵敏度,近衍射受限的成像系统中的第一类,该系统在地面可见光下的分辨率比迄今为止在太空中更高。
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