| 极紫外望远镜各通道夹角的测量 |
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| 引用本文： | 苏宙平,陈波.极紫外望远镜各通道夹角的测量[J].光学技术,2003,29(5):552-554. |
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| 作者姓名： | 苏宙平 陈波 |
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| 作者单位： | 中国科学院长春光学精密机械与物理研究所,应用光学国家重点实验室,长春,130022 |
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| 摘 要： | 极紫外望远镜是由四个单通道的望远镜捆绑在一起,以便同时对太阳的相同部分观测,由于受地面装调以及发射过程中的影响,无法保证四个通道光轴严格平行,必然带来观测位置上的误差。只要测出各通道之间的光轴夹角,便可在像面上采取适当的处理方法,以便减小这种误差,但这一夹角的测量精度必须控制在0.1″内。为达到如此高的精度,采用了太阳局部边缘探测的方法,很好地解决了这一问题。
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| 关 键 词： | 极紫外望远镜 边缘探测 亚像元 |
| 文章编号： | 1002-1582(2003)05-0552-03 |
| 修稿时间： | 2002年12月13 |
Measurement of angles between channels for an extreme ultra-violet telescope |
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| Abstract: | An extreme ultra-violet telescope (EUT) consists of four single-channe l telescopes, which are bound together and observe the same part of the solar at the same time. Because of the influence of alignment error on ground and launch vibration, EUT for keep four channels parallel seriously is impossible. And thi s will bring error of observation. If the angles between channels can be measure d, an effective measure can be taken to process image according to the value of angle. By this, the error of observation will be reduced. The requirement of pre cision of angles measurement is 0.1 arcs second. The method of part edge detecti ng is proposed and solved the problem. |
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| Keywords: | extreme ultra-violet telescope (EUT) edge detecting subpixel |
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