A refract-reflect telescope with Cooke as compensated lens

KANG Yu-si; LIU Wei-qi; FENG Rui

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A refract-reflect telescope with Cooke as compensated lens

更新时间：2020-08-12

- A refract-reflect telescope with Cooke as compensated lens
- Optics and Precision Engineering Vol. 15, Issue 3, Pages: 303-307(2007)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所,吉林长春,130033
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH703
- Received：22 April 2006，
  
  Revised：14 December 2006，
  
  Published Online：30 June 2007，
  
  Published：30 June 2007
- 稿件说明：
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KANG Yu-si, LIU Wei-qi, FENG Rui. A refract-reflect telescope with Cooke as compensated lens[J]. Optics and precision engineering, 2007, 15(3): 303-307.
DOI：

KANG Yu-si, LIU Wei-qi, FENG Rui. A refract-reflect telescope with Cooke as compensated lens[J]. Optics and precision engineering, 2007, 15(3): 303-307. DOI：

摘要

基于Cook结构补偿镜提出了一种球面折反型望远系统。该系统将传统折反结构中的非球面球面化并用基于Cook结构的补偿镜代替传统的前置大口径补偿镜。将该镜置于次镜之后

其直径减小了很多

支撑结构也变得简单易行

整个系统容易制造。系统光学性能如下:全视场为0.5°

相对孔径可以做到

遮拦比为0.42

MTF衍射极限为0.45@50pl

设计、加工和装校后总的MTF可以做到0.40@50pl

非常接近衍射极限水平。

Abstract

This paper introduces a new design about refract-reflect telescope using spheric surfaces instead of aspheric mirrors or large fore corrected lens

which lays a small Cook corrected lens behind the second mirror to compensate aberrations. This lens still achieves diffraction limit level in it's full field of 0.5° and

obstruction ratio of 0.42 and MTF 0.45@50pl.The finished assemblage MTF is over 0.4@50pl close to diffraction limit

it is shown that this new configuration can bring up a low cost telescope.

关键词

Keywords

references

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