典型文献
The Co-alignment of Winged HαData Observed by the New Vacuum Solar Telescope
文献摘要：
The New Vacuum Solar Telescope (NVST) has been releasing its novel winged Hαdata (WHD) since 2021 April, namely the Hαimaging spectroscopic data. Compared with the prior released version, the new data are further co-aligned among the off-band images and packaged into a standard solar physics community format. In this study, we illustrate the alignment algorithm used by the novel WHD, which is mainly based on the optical flow method to obtain the translation offset between the winged images. To quantitatively evaluate the alignment results of two images with different similarities, we calculate the alignment accuracies between the images of different off-band and line center, respectively. The result shows that our alignment algorithm could reach up to the accuracy of about 01 when the off-band of winged image is lower than 0.6 ?. In addition, we introduce the final product of the WHD in detail, which can provide convenience for the solar physicists to use high-resolution Hα imaging spectroscopic data of NVST.
文献关键词：
中图分类号：
作者姓名：
Yun-Fang Cai;Xu Yang;Yong-Yuang Xiang;Xiao-Li Yan;Zhen-Yu Jin;Hui Liu;Kai-Fan Ji
作者机构：
Yunnan Observatories,Chinese Academy of Sciences,Kunming 650011,China;Big Bear Solar Observatory,New Jersey Institute of Technology,40386 North Shore Lane,Big Bear City,CA,92314,USA
文献出处：
引用格式：
[1]Yun-Fang Cai;Xu Yang;Yong-Yuang Xiang;Xiao-Li Yan;Zhen-Yu Jin;Hui Liu;Kai-Fan Ji-.The Co-alignment of Winged HαData Observed by the New Vacuum Solar Telescope)[J].天文和天体物理学研究,2022(06):101-108
A类：
Winged
B类：
alignment,Data,Observed,by,New,Vacuum,Solar,Telescope,NVST,has,been,releasing,its,novel,winged,data,WHD,since,April,namely,imaging,spectroscopic,Compared,prior,released,version,new,further,aligned,among,band,images,packaged,into,standard,solar,physics,community,format,In,this,study,illustrate,algorithm,used,which,mainly,optical,flow,method,obtain,translation,offset,between,To,quantitatively,evaluate,results,two,different,similarities,calculate,accuracies,line,center,respectively,shows,that,our,could,reach,up,accuracy,about,when,lower,than,addition,introduce,final,product,detail,can,provide,convenience,physicists,high,resolution
AB值：
0.57079
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