Computer-aided alignment for primary and secondary mirrors

SUN Jing-wei; CHEN Tao; WANG Jian-li; YANG Fei

doi:10.3788/OPE.20101810.2156

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Computer-aided alignment for primary and secondary mirrors

Article | 更新时间：2020-08-12

- Computer-aided alignment for primary and secondary mirrors
- Optics and Precision Engineering Vol. 18, Issue 10, Pages: 2156-2163(2010)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
  2. 中国科学院研究生院北京,100039
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20101810.2156
  CLC： TH743
- Received：14 January 2010，
  
  Revised：03 February 2010，
  
  Published Online：28 October 2010，
  
  Published：20 October 2010
- 稿件说明：
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孙敬伟, 陈涛, 王建立, 杨飞. 主次镜系统的计算机辅助装调[J]. 光学精密工程, 2010,18(10): 2156-2163

SUN Jing-wei, CHEN Tao, WANG Jian-li, YANG Fei. Computer-aided alignment for primary and secondary mirrors[J]. Editorial Office of Optics and Precision Engineering , 2010,18(10): 2156-2163
孙敬伟, 陈涛, 王建立, 杨飞. 主次镜系统的计算机辅助装调[J]. 光学精密工程, 2010,18(10): 2156-2163 DOI： 10.3788/OPE.20101810.2156.

SUN Jing-wei, CHEN Tao, WANG Jian-li, YANG Fei. Computer-aided alignment for primary and secondary mirrors[J]. Editorial Office of Optics and Precision Engineering , 2010,18(10): 2156-2163 DOI： 10.3788/OPE.20101810.2156.

摘要

为了实现大口径望远镜系统的装调

提高其光学成像质量

研究了望远镜装调像差和计算机辅助装调技术。首先针对RC式望远镜系统

分析了装调过程中由于次镜偏心和倾斜导致系统模型产生的扰动误差。针对实际调整过程中选择零彗差点和曲率中心作为旋转中心进行调整的特点

分析了这两个旋转点的选择对系统像差和指向精度的影响。然后结合计算机辅助装调原理

研究了关于恒定彗差、线性像散与模型相关的灵敏度矩阵的特殊形式

结合波像差理论与光学软件Code V模型仿真来实现装调技术。最后

针对1 m级望远镜系统进行了安装调整。实验结果表明:装调后系统的RMS达到了0.144 5

大大优于装调前的1.214

证实了该方法具有较好的精度、抗干扰能力和实际应用价值。

Abstract

In order to realize the alignment of a large aperture telescopic system and to improve the image quality

the alignment aberration and computer-aided alignment technique are investigated. Firstly

the perturbation error of a RC telescope due to the displacement and tilt of a secondary mirror is analyzed in an alignment process. Based on the feature that the coma-free point and the center of curvature are chosen as the rotating centers during the adjusting process

the effect of choosing two different points on the optical aberration and pointing errors is emphatically analyzed. Then

according to wavefront aberration theory combining with optical software Code V

the special sensitivity matrixes of constant coma and linear astigmatism of telescope system are studied based on the computer aided alignment principle

and the alignment technique is realized by programming and emulating. Finally

combining the project applications

1 m telescope system is adjusted and aligned. Experimental results indicate that the RMS of system after alignment reaches 0.144 5

which is greatly superior to 1.214 before alignment. The results prove that the method has good accuracy

anti-interference ability and practical application values.

关键词

Keywords

references

徐刚,杨世模,龚雨兵. 大型光学望远镜副镜位姿精调机构的优化设计[J]. 光学精密工程, 2008,16(7):1181-1189. XU G, YANG SH M, GONG Y B. Optimal design of pose and position fine tuning apparatus for secondary mirror in large optical telescope [J]. Opt. Precision Eng.,2008,16(7):1181-1189.(in Chinese)[2] 赵勇志,张景旭,吴小霞,等. 1 m望远镜俯仰轴系精度检测误差的修正[J]. 光学精密工程,2009,17(10):2401-2405. ZHAO Y ZH, ZHANG J X, WU X X, et al.. Modification of altitude axis errors for 1 m aperture telescopes [J]. Opt. Precision Eng.,2009,17(10):2401-2405. (in Chinese)[3] 明名,王建立,张景旭,等. 大口径望远镜光学系统的误差分配与分析[J]. 光学精密工程,2009,17(1):104-108. MING M, WANG J L, ZHANG J X, et al.. Error budget and analysis for optical system in large telescope [J]. Opt. Precision Eng.,2009,17(1):104-108.(in Chinese)[4] 林妩媚. 光学系统计算机辅助装调(CAA)机理的研究[J]. 光电工程,1999,(26):49-52. LIN W M. Study on computer aided assembling mechanism of optical system [J].Opto-Electronic Engineering.1999,(26):49-52.(in Chinese)[5] 杨晓飞,张晓辉,韩昌元. Zemax软件在离轴三反射系统计算机辅助装调中的应用[J]. 光学精密工程,2004,12(3):270-274. YANG X F, ZHANG X H, HANG CH Y. Application of Zemax software in alignment of three-mirror off-axis aspherical optical system [J].Opt. Precision Eng., 2004,12(3):270-274.(in Chinese)[6] HVISC A M, BURGE J H. Alignment analysis of four-mirror spherical aberration correctors [J]. SPIE,2008,7018: 1-12.[7] JEONG H J,LAWRENCE G N. Simultaneous determination of misalignment and mirror surface figure error of a three mirror off-axis telescope by end-to-end measurements and reverse optimization: numerical analysis and simulation [J].SPIE,1988,966:341-353.[8] KIM S, YANG H S, LEE Y W,et al.. Merit function regression method for efficient alignment control of two-mirror optical system[J]. Optics Express,2007,15(8):5059-5068.[9] LEE H, DALTON G B,TOSH I. Computer-guided alignment Ⅱ: optical system alignment using differential wavefront sampling[J]. Optics Express, 2007,15(23):15424-15437. [10] BUCHROEDER R A. Tilted component optical systems . University of Arizona, Tucson, Arizona,1976.[11] SHACK R V. Influence of alignment errors of a telescope system on its aberration field[J]. SPIE.,1980,251,146-153.

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