The Richardson-Lucy deconvolution method to extract LAMOST 1D spectra  

作　　者：Min Li Guang-Wei Li Ke Lv Fu-Qing Duan Hasitieer Haerken Yong-Heng Zhao 

机构地区：[1]University of Chinese Academy of Sciences, Beijing 100049, China [2]Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China [3]Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China [4]College of Information Science and Technology, Beijing Normal University, Beijing 100875, China

出　　处：《Research in Astronomy and Astrophysics》2019年第10期65-68,共4页天文和天体物理学研究（英文版）

基　　金：supported by the Joint Research Fund in Astronomy (U1531242) under cooperative agreement between the National Natural Science Foundation of China (NSFC) and Chinese Academy of Sciences (CAS);the NSFC (No. 11673036);the Interdiscipline Research Funds of Beijing Normal University;Funding for the project has been provided by the National Development and Reform Commission

摘　　要：We use the Richardson-Lucy deconvolution algorithm to extract one-dimensional(1 D) spectra from Large Sky Area Multi-Object Fiber Spectroscopic Telescope(LAMOST) spectrum images. Compared with other deconvolution algorithms, this algorithm is much faster. The application on a real LAMOST image illustrates that the 1 D spectrum resulting from this method has a higher signal-to-noise ratio and resolution than those extracted by the LAMOST pipeline. Furthermore, our algorithm can effectively suppress the ringings that are often present in the 1 D resulting spectra generated by other deconvolution methods.We use the Richardson-Lucy deconvolution algorithm to extract one-dimensional(1 D) spectra from Large Sky Area Multi-Object Fiber Spectroscopic Telescope(LAMOST) spectrum images. Compared with other deconvolution algorithms, this algorithm is much faster. The application on a real LAMOST image illustrates that the 1 D spectrum resulting from this method has a higher signal-to-noise ratio and resolution than those extracted by the LAMOST pipeline. Furthermore, our algorithm can effectively suppress the ringings that are often present in the 1 D resulting spectra generated by other deconvolution methods.

关 键 词：instrumentation spectrographs-methods numerical-techniques image processing-techniques SPECTROSCOPIC 

分 类 号：P[天文地球]