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) Coaxial RHT setup, where the detector captures the image of the reflector and records the spots or fringes pattern.