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 

作者机构：University of Chinese Academy of Sciences Beijing 100049 China Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences Beijing 100101 China Key Laboratory of Space Astronomy and Technology National Astronomical Observatories Chinese Academy of Sciences Beijing 100101 China College of Information Science and Technology Beijing Normal University Beijing 100875 China 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2019年第19卷第10期

页      面：65-68页

核心收录：

学科分类：0709[理学-地质学] 07[理学] 0708[理学-地球物理学] 0704[理学-天文学] 0825[工学-航空宇航科学与技术] 

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 

主　　题：instrumentation spectrographs-methods numerical-techniques image processing-techniques spectroscopic 

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.