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学科:天体物理. 空间物理学. 等离子体物理
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[Title] Characterization and Correction of the Scattering Background Produced by Dust on the Objective Lens of the Lijiang 10-cm Coronagraph
影响因子:2.4
DOI码:10.1007/s11207-023-02233-3
教研室:天体物理
发表刊物:Solar Physics
关键字:Corona;Coronagraph;Scatter;Stray light;Dust
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 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.
合写作者:Liu Y,Zhang XF,Song TF
第一作者:Sha FY
论文编号:025
学科门类:理学
一级学科:天文学
卷号:298
期号:11
页面范围:id.139
ISSN号:0038-0938
是否译文:否
发表时间:2023-11-19

