Centroids analysis for circle of confusion in reverse Hartmann test

Zhao Zhu^{1, 2}, Hui Mei^{1, 2, †}, Xia Zheng-Zheng^{1, 2}, Zhao Yue-Jin^{1, 2}

(color online) 2D Gaussian fitting results of spots formed by (a) flat crystal, (b) spherical mirror, and (c) OAP mirror. I₀ denotes the initial intensity, and , the intensity fitted by 2D Gaussian function.