Study on lightweight beryllium mirror of space solar telescope

SONG Li-qiang; YANG Shi-mo; CHEN Zhi-yuan

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Study on lightweight beryllium mirror of space solar telescope

Article | 更新时间：2020-08-12

- Study on lightweight beryllium mirror of space solar telescope
- Optics and Precision Engineering Vol. 17, Issue 1, Pages: 58-64(2009)
- 作者机构：
  
  1. 中国科学院国家天文台,北京 100012
  2. 中国科学院研究生院, 北京100049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH75;P111.41
- Received：28 April 2008，
  
  Revised：30 June 2008，
  
  Published Online：25 January 2009，
  
  Published：25 January 2009
- 稿件说明：
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宋立强, 杨世模, 陈志远. 空间太阳望远镜中的轻量化铍镜研究[J]. 光学精密工程, 2009,17(1): 58-64

SONG Li-qiang, YANG Shi-mo, CHEN Zhi-yuan. Study on lightweight beryllium mirror of space solar telescope[J]. Editorial Office of Optics and Precision Engineering, 2009,17(1): 58-64
宋立强, 杨世模, 陈志远. 空间太阳望远镜中的轻量化铍镜研究[J]. 光学精密工程, 2009,17(1): 58-64 DOI：

SONG Li-qiang, YANG Shi-mo, CHEN Zhi-yuan. Study on lightweight beryllium mirror of space solar telescope[J]. Editorial Office of Optics and Precision Engineering, 2009,17(1): 58-64 DOI：

摘要

为提高空间太阳望远镜相关跟踪系统的动态性能

验证金属铍作为可见光波段反射镜材料的可行性与可靠性

对空间太阳望远镜相关跟踪器中的摆镜进行了研究

设计与研制了

84 mm轻量化铍镜。利用冲击研磨工艺得到铍粉

再通过热等静压工艺和机械加工得到铍镜镜坯。使用化学镀镍工艺在镜坯基体上镀覆镍磷合金过渡层

再经过光学加工完成铍镜研制。镜面干涉检测后得到面形精度为RMS:0.012

PV:0.114

铍镜轻量化率为43.68%。检测结果满足空间太阳望远镜的技术要求。

Abstract

In order to improve the dynamic performance of the correlation tracker in a Space Solar Telescope

and to verify the feasibility and reliability of a beryllium mirror working in visible band

the tip-tilt mirror of the correlation tracker in the space solar telescope was studied. A

84 mm lightweight beryllium mirror was designed and fabricated. Beryllium powder was obtained by impact attrition technique

and the beryllium mirror blank was fabricated by hot isostatic pressing technique and mechanical processing. The nickel-phosphorus alloy layer was plated onto the substrate of beryllium mirror by electroless nickel plating

and the beryllium mirror was completed by optical processing. Surface testing results indicate that the surface figure errors of beryllium mirror are PV value of 0.114 and RMS of 0.012 (=632.8 nm)

and the lightweight ratio is 43.68%. The results of surface figure error satisfy the technical requirements for the space solar telescope

which shows that beryllium can be used as mirror substrate materials of space astronomical instruments.

关键词

Keywords

references

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Related Institution

National Astronomical Observatories, Chinese Academy of Sciences

Graduate School of the Chinese Academy of Sciences

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