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The Science Operations and Data Center (SODC) of the ASO-S mission

Research in Astronomy and Astrophysics 2019年第11期19卷 103-109页

作者： Yu Huang Hui Li Wei-Qun Gan You-Ping Li Jiang-Tao Su Yuan-Yong Deng Li Feng Yang Su Wei Chen Shi-Jun Lei Ying Li Yun-Yi Ge Ying-Na Su Si-Ming Liu Jing-Jing Zang Zun-Lei Xu Xian-Yong Bai Jing-Wei Li Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210034China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China

A ground data analysis center is very important to the success of a *** introduce the Science Operations and Data Center(SODC)for the ASO-S mission,which consists of a scientific operation subcenter,a data management subcenter,a data analysis subcenter and a user service *** mission planning process,instrument observation modes and the data volume are *** describe the data flow and processing procedures from spacecraft telemetry to high-level science data,and the long-term archival as *** data policy and distributions are also briefly introduced.

关键词： space vehicles:instruments methods:data analysis techniques:image processing

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Chinese sunspot drawings and their digitization–(Ⅱ)accuracy analysis for digitized sunspot hand-drawing records of Yunnan Observatories

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Research in Astronomy and Astrophysics 2020年第4期20卷 156-162页

作者： Yang Peng Xiao-Yu Luo Shu-Guang Zeng Lin-Hua Deng Sheng Zheng Gang-Hua Lin Yu-Lin Cheng Jin-Ping Tao Yong-Li Feng College of Science China Three Gorges UniversityYichang 443002China Yunnan Observatories Chinese Academy of SciencesKunming 650216China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Chongqing University of Arts and Sciences Chongqing 402160China

Sunspots are the most striking and easily observed magnetic structures of the Sun,and statistical analysis of solar historical data could reveal a wealth of information on the long-term variation of solar activity *** hand-drawn sunspot records of Yunnan Observatories,Chinese Academy of Sciences have been accumulating for more than 60 years,and nearly 16000 images have been *** the future,the observation mode of recording sunspots by hand-drawing will be replaced inevitably by digital images observed either at ground or in *** connect the hand-drawn sunspot data and the purely digital sunspot data in future,it is necessary to analyze the systematic errors of the data which are observed by the two observation modes in the period of *** this paper,we choose 268 round sunspots(Htype in modified Zurich sunspot classification)from the drawing of Yunnan Observatories to compare their positions and areas with the CCD observations made by Helioseismic and Magnetic imager(HMI)on board Solar Dynamic Observatory(SDO)and Global Oscillation Network Group(GONG).We find that the latitude and longitude accuracy of hand-drawn sunspot are within-0.127 and 2.29 degree respectively,and the area accuracy is about 16.36 sunspot unit(μHem).Systematic errors apparently decrease with large sunspot.

关键词： sunspots methods:data analysis techniques:image processing

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