862 citations · 2k across the 39 of their papers we have counts for
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LAMOST Medium-Resolution Spectral Survey of Galactic Nebulae (LAMOST-MRS-N): Subtraction of Geocoronal Halpha Emission
Wei Zhang, Hong Wu, Chaojian Wu +10
We introduce a method of subtracting geocoronal Halpha emissions from the spectra of LAMOST medium-resolution spectral survey of Galactic nebulae (LAMOST-MRS-N). The flux ratios of…
Cosmic Ray Removal in Fiber Spectroscopic Image
Zhongrui Bai, Haotong Zhang, Hailong Yuan +4
Single-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 si…
Sky Subtraction for LAMOST
Zhong-Rui Bai, Hao-Tong Zhang, Hai-Long Yuan +7
Sky subtraction is the key technique in data reduction of multi-fiber spectra. Knowledge of the related instrument character is necessary to determine the method adopted in sky sub…
LAMOST Spectrograph Response Curves: Stability and Application to flux calibration
Bing Du, A-Li Luo, Zhong-Rui Bai +14
The task of flux calibration for LAMOST (Large sky Area Multi-Object Spectroscopic Telescope) spectra is difficult due to many factors. For example, the lack of standard stars, fla…
A Practical Deconvolution Computation Algorithm to Extract 1D Spectra from 2D Images of Optical Fiber Spectroscopy
Guangwei Li, Haotong Zhang, Zhongrui Bai
Bolton and Schlegel presented a promising deconvolution method to extract 1D spectra from a 2D optical fiber spectral CCD image. The method could eliminate the PSF difference betwe…
Measure fiber position errors from spectra data
Jian-Jun Chen, Zhong-Rui Bai, A-Li Luo +1
Precise fiber positioning is crucial to a wide field, multi-fiber spectroscopic survey like LAMOST. Nowadays, most position error measurements are based on CCD photographic and ima…
The Effects of Spectrograph Slit Modes on the Accuracy of Stellar Radial Velocity Measurement and Atmospheric Parameter Estimation
FengFei Wang, HaoTong Zhang, A-Li Luo +3
Spectrograph slit is conventionally used to enhance the spectral resolution and manage how much light can be allowed to enter spectrograph. A narrower slit provides a higher resolu…
Moon night sky brightness simulation for Xinglong station
Song Yao, Hao-Tong Zhang, Hai-Long Yuan +5
With a sky brightness monitor in Xinglong station of National Astronomical Observatories of China (NAOC), we collected data from 22 dark clear nights and 90 lunar nights. We first…