In order to achieve better wavefront aberration suppression and higher detection ability for ac-tive telescopes with multiple mirrors and large fields of view,this paper investigated wavefront sensing based on the single-shot curvature sensor at the edge of the telescope's field of view,and realize system control based on analysis of spatial characteristics using power spectrum.Firstly,based on the theory of complex light field,the basic principle and characteristic law of multi surface wavefront control were ex-pressed.Secondly,the accuracy characteristics of this method in the control process of multi mirror large field of view active optical telescopes were analyzed.Thirdly,the feasibility of controlling was verified us-ing desktop experiments.Finally,the correlation between the wavefront reconstruction results and the the-oretical wavefront is higher than 0.85.Using power spectrum,the spatial frequency characteristics sensi-tivity of each field of view are improved by 20%,compared to root mean square.
关键词
曲率传感/波前像差/大视场主动光学/大口径望远镜
Key words
curvature sensing/wavefront aberration/active optics with large field of view/large aperture telescope
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