Supporting and assembling for primary mirrors of 1 m aperture telescopes

HAN Guang-yu; CAO Li-hua; GAO Yun-guo; QIAO Jian; XUE Xiang-yao

doi:10.3788/OPE.20122009.1922

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Supporting and assembling for primary mirrors of 1 m aperture telescopes

Article | 更新时间：2020-08-12

- Supporting and assembling for primary mirrors of 1 m aperture telescopes
- Optics and Precision Engineering Vol. 20, Issue 9, Pages: 1922-1928(2012)
- 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,130033
  2. 长春理工大学
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20122009.1922
  CLC： TH75;TH703
- Received：10 March 2012，
  
  Revised：28 April 2012，
  
  Published：10 September 2012
- 稿件说明：
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韩光宇, 曹立华, 高云国, 乔健, 薛向尧. 1 m望远镜主反射镜的支撑和装配[J]. 光学精密工程, 2012,20(9): 1922-1928

HAN Guang-yu, CAO Li-hua, GAO Yun-guo, QIAO Jian, XUE Xiang-yao. Supporting and assembling for primary mirrors of 1 m aperture telescopes[J]. Editorial Office of Optics and Precision Engineering, 2012,20(9): 1922-1928
韩光宇, 曹立华, 高云国, 乔健, 薛向尧. 1 m望远镜主反射镜的支撑和装配[J]. 光学精密工程, 2012,20(9): 1922-1928 DOI： 10.3788/OPE.20122009.1922.

HAN Guang-yu, CAO Li-hua, GAO Yun-guo, QIAO Jian, XUE Xiang-yao. Supporting and assembling for primary mirrors of 1 m aperture telescopes[J]. Editorial Office of Optics and Precision Engineering, 2012,20(9): 1922-1928 DOI： 10.3788/OPE.20122009.1922.

摘要

考虑大口径光学望远镜中主反射镜的支撑精度直接影响光电探测设备的整机性能

本文根据光学系统对口径为1 000 mm的主镜的支撑精度要求和光电设备中主镜的使用情况

采用轴向和径向组合支撑的结构形式来完成对主镜的支撑

并通过有限元法对支撑位置进行理论分析和计算。实验显示

在轴向18点浮动支撑、径向3点柔性支撑的情况下

主镜能够达到较高的面形精度。针对传统装调工艺不能获得理想的面形精度

探索了新的主镜装调方法。用干涉仪对带有支撑的主镜进行实时测量并进一步进行修磨

使主镜在装配完成后达到/18的面形精度。该方法满足了本项目的指标要求

也为更大口径主镜的装调提供了一种新的思路。

Abstract

As the support accuracy of primary mirror of a large caliber optical telescope directly influences the overall unit of opto-electrical detecting equipment

this paper presents a support structure combined an axial support and a radial support for the primary mirror with a diameter of 1 000 mm according to the requirements of an optical system for support accuracy. Furthermore

the finite element method is used to analyze and calculate the support positions theoretically. Experiments show that when a 18-point floating support is used in the axial support and a 3-point resilient mounting in the radial support

the higher surface figure accuracy for the primary mirror can be reached. As traditional assembling and adjusting techniques can not reach the ideal surface figure accuracy

it explores a new assembling and adjusting approach to the primary mirror. An interferometer is applied to the measurement of the primary mirror with a support in real-time

then it is grinded again to obtain the higher accuracy. After the primary mirror is assembled

its surface figure accuracy reaches /18. The results not only meet the index requirements of the project

but also offer a new way to assemble and adjust larger caliber primary mirrors.

关键词

Keywords

references

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