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Cosmic Ray Removal in Fiber Spectroscopic Image
Bai, Zhongrui1,2; Zhang, Haotong2; Yuan, Hailong2; Carlin, Jeffrey L.3,4; Li, Guangwei2; Lei, Yajuan2; Dong, Yiqiao2; Yang, Huiqin2; Zhao, Yongheng1,2; Cao, Zihuang2
2017-02-01
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
Volume129Issue:972
AbstractSingle-exposure spectra in large spectral surveys are valuable for time domain studies such as stellar variability, but there is no available method to eliminate cosmic rays for single-exposure, multi-fiber spectral images. In this paper, we describe a new method to detect and remove cosmic rays in multi-fiber spectroscopic single exposures. Through the use of two-dimensional profile fitting and a noise model that considers the position-dependent errors, we successfully detect as many as 80% of the cosmic rays and correct the cosmic ray polluted pixels to an average accuracy of 97.8%. Multiple tests and comparisons with both simulated data and real LAMOST data show that the method works properly in detection rate, false detection rate, and validity of cosmic ray correction.
SubtypeArticle
KeywordTechniques: Image Processing
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational Natural Science Foundation of China (NSFC)(11503054) ; National Natural Science Foundation of China (NSFC)(11503054) ; NSFC Key Program(11333004) ; NSFC Key Program(11333004) ; National Key Basic Research Program of China(2014CB845700) ; National Key Basic Research Program of China(2014CB845700) ; Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; National Development and Reform Commission ; National Development and Reform Commission ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC)(11503054) ; National Natural Science Foundation of China (NSFC)(11503054) ; NSFC Key Program(11333004) ; NSFC Key Program(11333004) ; National Key Basic Research Program of China(2014CB845700) ; National Key Basic Research Program of China(2014CB845700) ; Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; National Development and Reform Commission ; National Development and Reform Commission ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences
DOI10.1088/1538-3873/129/972/024004
WOS KeywordSPACE-TELESCOPE IMAGES ; SINGLE IMAGES ; REJECTION ; ALGORITHM ; HITS
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China (NSFC)(11503054) ; National Natural Science Foundation of China (NSFC)(11503054) ; NSFC Key Program(11333004) ; NSFC Key Program(11333004) ; National Key Basic Research Program of China(2014CB845700) ; National Key Basic Research Program of China(2014CB845700) ; Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; National Development and Reform Commission ; National Development and Reform Commission ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC)(11503054) ; National Natural Science Foundation of China (NSFC)(11503054) ; NSFC Key Program(11333004) ; NSFC Key Program(11333004) ; National Key Basic Research Program of China(2014CB845700) ; National Key Basic Research Program of China(2014CB845700) ; Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; National Development and Reform Commission ; National Development and Reform Commission ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000391876100001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8287
Collection光学天文研究部
Affiliation1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China
3.LSST, 933 North Cherry Ave, Tucson, AZ 85721 USA
4.Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA
Recommended Citation
GB/T 7714
Bai, Zhongrui,Zhang, Haotong,Yuan, Hailong,et al. Cosmic Ray Removal in Fiber Spectroscopic Image[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2017,129(972).
APA Bai, Zhongrui.,Zhang, Haotong.,Yuan, Hailong.,Carlin, Jeffrey L..,Li, Guangwei.,...&Cao, Zihuang.(2017).Cosmic Ray Removal in Fiber Spectroscopic Image.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,129(972).
MLA Bai, Zhongrui,et al."Cosmic Ray Removal in Fiber Spectroscopic Image".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 129.972(2017).
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