应用光学, 2014, 35 (1): 1, 网络出版: 2014-01-17   

“宋”望远镜夏克哈特曼光学系统设计

Design of SONG Shack-Hartmann optical system
寇松峰 1,2,*刘根荣 1,2牛冬生 1,2叶宇 1,2王国民 1,2
作者单位
1 中国科学院国家天文台 南京天文光学技术研究所,江苏 南京 210042
2 中国科学院天文光学技术重点实验室,江苏 南京 210042
摘要
根据中国“宋”标准节点望远镜系统要求,设计了用于望远镜波前误差测量的夏克哈特曼(S-H)传感器光学系统。从望远镜衍射极限成像和观测星等要求出发,对S-H的采样点数选取和波面重建精度进行分析计算,根据所选微透镜阵列和“宋”望远镜光学参数进行S-H准直镜的消像差设计,采用两组双胶合透镜实现了480 nm~680 nm波长范围的系统衍射极限成像。设计的系统能够实现6等星的目标测量,测量精度005"。根据设计结果搭建了实验系统,对主镜初始状态和校正之后的波前误差进行了测量,并将S-H测量结果与4D干涉仪测量结果进行了比较。实验结果表明:所设计S-H系统测量精度0008 μm(RMS),能够满足“宋”望远镜的技术要求。
Abstract
In this paper, we gave an optic design of stellar oscillations network group (SONG) Shack-Hartmann (S-H). The optical system and main parameters of S-H were determined, mainly according to the demands of diffraction limited imaging quality and magnitude of the telescope; According to the optical parameters of SONG and the micro lens array, an eliminating aberration design was carried out based on two doublets; The performance of the S-H was within diffraction limit. Designing results showed that the 6th magnitude and accuracy of 0.05″ could be achieved. Based on the design results, an experimental system was built. A comparative study on measuring accuracy between S-H and 4-D interferometer was carried out. The experimental results showed that the measuring accuracy of S-H is 0008 μm which could meet the requirements of Chinese SONG telescope.

寇松峰, 刘根荣, 牛冬生, 叶宇, 王国民. “宋”望远镜夏克哈特曼光学系统设计[J]. 应用光学, 2014, 35(1): 1. KOU Song-feng, LIU Gen-rong, NIU Dong-sheng, YE Yu, WANG Guo-min. Design of SONG Shack-Hartmann optical system[J]. Journal of Applied Optics, 2014, 35(1): 1.

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