Liu Yu
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Supervisor of Doctorate Candidates
Supervisor of Master's Candidates
- Doctoral Supervisor
- Master Tutor
- Business Address:x30353
- Academic Titles:Director of the Center for Astrophysics, SWJTU
- Other Post:实测天体物理团队负责人
- Alma Mater:中国科学院研究生院（现国科大）
- Supervisor of Doctorate Candidates
- Supervisor of Master's Candidates
- School/Department:School of Physical Science and Technology
- Discipline:Astrophysics.
Space Physics
Plasmphysics
Contact Information
- Email：
- Paper Publications
[Title] Characterization and Correction of the Scattering Background Produced by Dust on the Objective Lens of the Lijiang 10-cm Coronagraph
- Impact Factor:2.4
- DOI number:10.1007/s11207-023-02233-3
- Teaching and Research Group:天体物理
- Journal:Solar Physics
- Key Words:Corona;Coronagraph;Scatter;Stray light;Dust
- Abstract: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 results demonstrate that correcting for dust-scattered light is crucial for high-precision calibration of ground-based coronagraph data and for future routine coronal magnetic-field measurements.
- Co-author:Liu Y,Zhang XF,Song TF
- First Author:Sha FY
- Document Code:025
- Discipline:Science
- First-Level Discipline:Astronomy
- Volume:298
- Issue:11
- Page Number:id.139
- ISSN No.:0038-0938
- Translation or Not:no
- Date of Publication:2023-11-19