“宋”望远镜夏克哈特曼光学系统设计 |
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引用本文: | 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):1-6. |
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作者姓名: | 寇松峰 刘根荣 牛冬生 叶宇 王国民 |
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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; |
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基金项目: | 国家自然科学基金(11273040) |
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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 m(RMS),能够满足宋望远镜的技术要求。
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关 键 词: | 光学设计 夏克哈特曼 主动支撑 对比测量 |
收稿时间: | 2013/6/26 |
Design of SONG Shack-Hartmann optical system |
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Institution: | 1.National Astronomical Observatories / Nanjing Institute of Astronomical Optics &Technology,CAS,Nanjing 210042,China;2.Key Laboratory of Astronomical Optics &Technology,Nanjing Institute of Astronomical Optics &Technology,CAS,Nanjing 210042,China; |
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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 m which could meet the requirements of Chinese SONG telescope. |
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Keywords: | optical design Shark-Hartmann active support contrastive measurement |
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