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We use the Richardson-Lucy deconvolution algorithm to extract one dimensional(1D) spectra from LAMOST spectrum images. Compared with other deconvolutionalgorithms, this algorithm is much more fast. The practice on a real LAMOSTimage illustrates that the 1D resulting spectrum of this method has a higherSNR and resolution than those extracted by the LAMOST pipeline. Furthermore,our algorithm can effectively depress the ringings that are often shown in the1D resulting spectra of other deconvolution methods.

The Richardson-Lucy Deconvolution method to Extract LAMOST 1D Spectra