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Precise Reduction of Solar Spectra Observed by the One-Meter New Vacuum Solar Telescope
Cai YF(蔡云芳)1,2; Xu Z(徐稚)1; Li ZG(李正刚)1; Xiang YY(向永源)1; Chen YC(陈宇超)1,2; Fu Y(付玉)1; Ji KF(季凯帆)1; Ji, Kaifan(Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China)
发表期刊SOLAR PHYSICS
2017-10-01
卷号292期号:10
DOI10.1007/s11207-017-1178-0
产权排序第1完成单位
收录类别SCI
关键词Spectrum Visible Sunspots Velocity Velocity Fields Photosphere
摘要We present a precise and complete procedure for processing spectral data observed by the one-meter New Vacuum Solar Telescope (NVST). The procedure is suitable for both sit-and-stare and raster-scan spectra. In this work, the geometric distortions of the spectra are first corrected for subsequent processes. Then, considering the temporal changes and the remnants of spectral lines in the flat-field, the original flat-field matrix is split into four independent components to ensure a high-precision flat-fielding correction, consisting of the continuum gradient matrix, slit non-uniform matrix, CCD dust matrix, and interference fringe matrix. Subsequently, the spectral line drifts and intensity fluctuations of the science data are further corrected. After precise reduction with this procedure, the measuring accuracies of the Doppler velocities for different spectral lines and of the oscillation curves of the chromosphere and photosphere are measured. The results show that the highest measuring accuracy of the Doppler velocity is within 100 ms(-1), which indicates that the characteristics of the photosphere and chromosphere can be studied cospatially and cotemporally with the reduced spectra of the NVST.
项目资助者National Natural Science Foundation of China (NSFC)(11773072, 11573012, 11473064)
语种英语
学科领域天文学
文章类型Article
ISSN0038-0938
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WOS记录号WOS:000413621200010
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ADAPTIVE OPTICS ; HIGH-RESOLUTION ; IMAGES ; 1-M
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/11951
专题抚仙湖太阳观测站
通讯作者Ji, Kaifan(Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, China
2.University of Chinese Academy of Sciences, Beijing, China
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GB/T 7714
Cai YF,Xu Z,Li ZG,et al. Precise Reduction of Solar Spectra Observed by the One-Meter New Vacuum Solar Telescope[J]. SOLAR PHYSICS,2017,292(10).
APA Cai YF.,Xu Z.,Li ZG.,Xiang YY.,Chen YC.,...&Ji, Kaifan.(2017).Precise Reduction of Solar Spectra Observed by the One-Meter New Vacuum Solar Telescope.SOLAR PHYSICS,292(10).
MLA Cai YF,et al."Precise Reduction of Solar Spectra Observed by the One-Meter New Vacuum Solar Telescope".SOLAR PHYSICS 292.10(2017).
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