中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 云南天文台
  3. 中国科学院云南天文台
  4. 选址与日冕观测组
Characterization and Correction of the Scattering Background Produced by Dust on the Objective Lens of the Lijiang 10-cm Coronagraph

文献类型：期刊论文

作者Sha FY(沙飞扬)1,2,3; Liu Y(刘煜)1,2,3; Zhang XF(张雪飞)3; Song TF(宋腾飞)3
刊名SOLAR PHYSICS
出版日期2023-11
卷号298期号:11
ISSN号0038-0938
关键词Corona Coronagraph Scatter Stray light Dust
DOI10.1007/s11207-023-02233-3
产权排序第1完成单位
文献子类Article
英文摘要Scattered light from the objective lens, directly exposed to the intense sunlight, is a dominant source of stray light in internally occulted coronagraphs. The variable stray light, such as the scatter from dust on the objective lens, can produce varying scattering backgrounds in coronal images, significantly impacting image quality and data analysis. Using data acquired by the Lijiang 10-cm Coronagraph, the quantitative relationship between the distribution of dust on the objective lens and the resulting scattering background is analyzed. Two empirical models for the scattering background are derived, and used to correct the raw coronal data. The second model, which depends on three parameters and performs better, shows that the scattering-background distribution varies with angle, weakens with increasing height, and enhances with increasing dust level on the objective lens. Moreover, we find that the dust on the center of the objective lens can contribute more significantly to the scattering background than on the edge. This study not only quantitatively confirms the significant impact of the stray light produced by dust on the objective lens of the coronagraph, but also corrects the coronal data with this stray light for the first time. Correcting for dust-scattered light is crucial for the high-precision calibration of ground-based coronagraph data, enabling a more accurate analysis of coronal structures. Furthermore, our model is envisioned to support the provision of reliable observational data for future routine coronal magnetic-field measurements using ground-based coronagraphs.
学科主题天文学
URL标识查看原文
出版地VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
WOS关键词MAGNETIC-FIELDS ; TEMPERATURE ; LINE
资助项目National Natural Science Foundation of China[12173086]; National Natural Science Foundation of China[11873090]; National Natural Science Foundation of China[12373063]; National Natural Science Foundation of China[11533009]; National Natural Science Foundation of China[202205AG070009]; Light of West China program of CAS and Yunnan Key Laboratory of the Solar Physics and Space Science[2022YFF0503800]; National Key R&D Program of China; National Science & Technology Infrastructure of China
WOS研究方向Astronomy & Astrophysics
语种英语
出版者SPRINGER
WOS记录号WOS:001107572900001
资助机构National Natural Science Foundation of China[12173086, 11873090, 12373063, 11533009] ; National Natural Science Foundation of China[202205AG070009] ; Light of West China program of CAS and Yunnan Key Laboratory of the Solar Physics and Space Science[2022YFF0503800] ; National Key R&D Program of China ; National Science & Technology Infrastructure of China
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/26423]  
专题云南天文台_选址与日冕观测组
无名山观测站
作者单位1.School of Physical Science and Technology, Southwest Jiaotong University, Chengdu, China;
2.Schoold of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, China
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming, China;
推荐引用方式
GB/T 7714		 Sha FY,Liu Y,Zhang XF,et al. Characterization and Correction of the Scattering Background Produced by Dust on the Objective Lens of the Lijiang 10-cm Coronagraph[J]. SOLAR PHYSICS,2023,298(11).
APA 沙飞扬,刘煜,张雪飞,&宋腾飞.(2023).Characterization and Correction of the Scattering Background Produced by Dust on the Objective Lens of the Lijiang 10-cm Coronagraph.SOLAR PHYSICS,298(11).
MLA 沙飞扬,et al."Characterization and Correction of the Scattering Background Produced by Dust on the Objective Lens of the Lijiang 10-cm Coronagraph".SOLAR PHYSICS 298.11(2023).

入库方式： OAI收割

来源：云南天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。