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Title:
Adaptive Wavelength Calibration Algorithm for LAMOST
Authors:
Qin, H. Q.; Zhu, J.; Zhu, Z. Q.; Ye, Z. F.; Luo, A. L.
Affiliation:
AA(Institute of Statistical Signal Processing, Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, P. R. China.), AB(Institute of Statistical Signal Processing, Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, P. R. China.), AC(Institute of Statistical Signal Processing, Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, P. R. China.), AD(Institute of Statistical Signal Processing, Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, P. R. China.), AE(Department of LAMOST, National Astronomical Observatoires of China, Beijing 100012, P. R. China)
Publication:
Publications of the Astronomical Society of Australia, Volume 27, Issue 3, pp. 265-271. (PASA Homepage)
Publication Date:
06/2010
Origin:
PASA
Astronomy Keywords:
instrumentation: spectrographs, methods: data analysis, techniques:spectroscopic, line: identification
Abstract Copyright:
(c) 2010 Astronomical Society of Australia
DOI:
10.1071/AS09038
Bibliographic Code:
2010PASA...27..265Q

Abstract

An adaptive algorithm is presented for the wavelength calibration of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST). The new algorithm can identify emission lines of calibration lamp without manual interaction and then fit relationship between the pixel positions and the wavelengths by utilizing a polynomial function. In this study, experiments are performed both on the actual data observed by LAMOST and the simulated data to analyze the accuracy and the robustness. The experimental results show that the proposed automatic algorithm can perform the lines identification exactly and acquire the wavelength solution accurately. Thus, an applicable approach is provided for the wavelength calibration of LAMOST.
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