Osborn James, Myers Richard M, Love Gordon D
Department of Physics, Centre for Advanced Instrumentation, University of Durham, South Road, Durham, UK, DH1 3LE.
Opt Express. 2009 Sep 28;17(20):17279-92. doi: 10.1364/OE.17.017279.
We describe a method to reduce residual speckles in an adaptive optics system which add to the halo of the point spread function (PSF). The halo is particularly problematic in astronomical applications involving the detection of faint companions. Areas of the pupil are selected where the residual wavefront aberrations are large and these are masked using a spatial light modulator. The method is also suitable for smaller telescopes without adaptive optics as a relatively simple method to increase the resolution of the telescope. We describe the principle of the technique and show simulation results.
我们描述了一种减少自适应光学系统中残余散斑的方法，这些散斑会增加点扩散函数（PSF）的光晕。在涉及微弱伴星探测的天文应用中，光晕问题尤为突出。选择瞳孔中残余波前像差较大的区域，并用空间光调制器对其进行掩蔽。该方法也适用于没有自适应光学系统的小型望远镜，作为一种相对简单的提高望远镜分辨率的方法。我们阐述了该技术的原理并展示了模拟结果。
