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| 日晕测量与日晕光度计外缘杂散光抑制试验 | |
| 引用本文： | 刘念平,刘煜,申远灯,张雪飞,曹文达,Arnaud Jean.日晕测量与日晕光度计外缘杂散光抑制试验[J].天文学报,2011,52(2). |
| 作者姓名： | 刘念平 刘煜 申远灯 张雪飞 曹文达 Arnaud Jean |
| 作者单位： | 1. 中国科学院国家天文台/云南天文台,昆明,650011;中国科学院研究生院,北京,100049 2. 中国科学院国家天文台/云南天文台,昆明,650011 3. Center for Solar Terrestrial Research，New Jersey Institute of Technology， Newark NJ 07102，USA 4. Université de Nice Sophia Antipolis, Fizeau Laboratory,Parc Valrose 06108 Nice,France |
| 基金项目： | 国家天文台天文专项(日晕光度计研制)项目，国家自然科学基金 |
| 摘 要： | 为配合大型太阳设备西部选址工作,研制了一架现代日晕光度计(Sky Brightness Monitor,SBM).前期实验对日晕光度计性能进行了测试,同时积累了云南部分址点的日晕数据.资料分析结果显示,轿子雪山正午前后的日晕水平最低可至日面中心强度百万分之几的量级(蓝波段).这表明该日晕光度计内部杂散光水平已达到了国际同类产品的标准.日晕光度计的内部杂散光源主要来自两部分:镜筒前端中性滤光片(ND4)固定套圈的边缘衍射(视场靠内区域)和镜筒内置光阑的边缘衍射(视场靠外区域).针对后者进行的变换光阑孔径大小试验结果证实,适当缩小光阑孔径可有效减小数据中视场靠外区域的衍射光干扰. |
| 关 键 词： | 仪器 光度计 太阳 日冕 |
Measurement of Sky Brightness and Suppression of Scattering in Sky Brightness Monitor |
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| LIU Nian-ping,LIU Yu,SHEN Yuan-deng,ZHANG Xue-fei,CAO Wen-da,Arnaud Jean.Measurement of Sky Brightness and Suppression of Scattering in Sky Brightness Monitor[J].Acta Astronomica Sinica,2011,52(2). | |
| Authors: | LIU Nian-ping LIU Yu SHEN Yuan-deng ZHANG Xue-fei CAO Wen-da Arnaud Jean |
| Institution: | LIU Nian-ping~(1,2)LIU Yu~1 SHEN Yuan-deng~(1,2)ZHANG Xue-fei~1 CAO Wen-da~3 Arnaud Jean~4 (1 National Astronomical Observatories/Yunnan Astronomical Observatory,Chinese Academy of Sciences,Kunming 650011) (2 Graduate University of Chinese Academy of Sciences,Beijing 100049) (3 Center for Solar Terrestrial Research,New Jersey Institute of Technology,Newark NJ 07102,USA) (4 Universite de Nice Sophia Antipolis,Fizeau Laboratory,Parc Valrose 06108 Nice,France) |
| Abstract: | A modern Sky Brightness Monitor(SBM)was developed for the site survey in West China for the future large solar equipment installation.The performance of this new SBM was tested in the recent preliminary experiments.A lot of sky brightness data had been obtained at a few sites in Yunnan.The blue channel result shows that the sky brightness near the noon time on Jiaozi Snow Mountain is as low as a few millionths of the solar center intensity,indicating the low scattering level inside our SBM instrument.The sc... |
| Keywords: | instrumentation photometers sun corona |
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