| 兴隆1m光学望远镜杂散光效应研究 |
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| 引用本文： | 赵飞,王森.兴隆1m光学望远镜杂散光效应研究[J].天文研究与技术,2010,7(2). |
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| 作者姓名： | 赵飞 王森 |
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| 作者单位： | 赵飞,ZHAO Fei(中国科学院国家天文台,北京,100012;中国科学院研究生院,北京,100049;中国科学院光学天文重点实验室(国家天文台),北京,100012);王森,WANG Sen(中国科学院国家天文台,北京,100012) |
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| 摘 要： | 兴隆1m光学望远镜采取了加装挡板等基于经验和定性分析的杂散光抑制措施。用Tracepro光学分析软件对圆顶内1m望远镜的杂散光传播路径做了计算和分析,提出了对1m望远镜的杂散光抑制的改进措施,通过在Tracepro中计算的系统杂散光"归一化点源辐照度透过率(PSNIT)"函数对改进措施进行了评价。计算结果表明:对于有效视场外30°范围的杂散源,改进措施可使得1m望远镜的PSNIT全部下降到10-10;模拟1m望远镜在满月条件下对偏月25°的天体观测(R波段、15等星、t=15~150s),1m望远镜观测信噪比可提高约147%。
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| 关 键 词： | 天文光学望远镜 杂散光 定量分析 信噪比 |
Study of Stray Light for the Xinglong 1-Meter Optical Telescope |
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| ZHAO Fei,WANG Sen.Study of Stray Light for the Xinglong 1-Meter Optical Telescope[J].Astronomical Research & Technology,2010,7(2). |
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| Authors: | ZHAO Fei WANG Sen |
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| Institution: | ZHAO Fei1,2,3,WANG Sen1(1.National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012,China,2.Graduate University of the Chinese Academy of Sciences,Beijing 100049,3.Key Laboratory of Optical Astronomy,National Astronomical Observatories,China) |
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| Abstract: | Based on experience and qualitative analyses,some measures are taken to reduce stray light for the Xinglong 1-meter optical telescope.These measures include using baffles painted in black.In this paper,the stray-light propagation in this telescope has been quantitatively analyzed with the code Tracepro,and an improvement design for stray-light supression is proposed and evaluated by calculating its PSNIT(Point Source Normalized Irradiance Transmittance).The calculation results indicate that for the stray-li... |
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| Keywords: | PSNIT Optical telescope Stray light Quantitative analysis PSNIT SNR |
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