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题名: The Night Sky Spectrum of Xinglong Observatory: Changes from 2004 to 2015
作者: Zhang, Ji-Cheng; Fan, Zhou; Yan, Jing-Zhi; Kumar, Yerra Bharat; Li, Hong-Bin; Gao, Dong-Yang; Jiang, Xiao-Jun
刊名: PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
出版日期: 2016
卷号: 128, 期号:968, 页码:105004
英文摘要: We present spectroscopic measurements on the night sky of Xinglong Observatory for a period of 12 years from 2004 to 2015. The spectra were obtained on moonless clear nights using the OMR spectrograph mounted on a 2.16-m reflector with a wavelength coverage of 4000-7000 angstrom. The night sky spectrum shows the presence of emission lines from Hg I and Na I due to local artificial sources, along with the atmospheric emission lines, i.e., O I and OH molecules, indicating the existence of light pollution. We have monitored the night sky brightness during the whole night and found some decrement in the sky brightness with time, but the change is not significant. Also, we monitored the light pollution level in different azimuthal directions and found that the influence of light pollution from the direction of Beijing is stronger compared with that from the direction of Tangshan and other areas. An analysis of night sky spectra for the entire data set suggested that the zenith sky brightness of Xinglong Observatory has brightened by about 0.5 mag arcsec(-2) in the V and B bands from 2004 to 2015. We recommend consecutive spectroscopic measurements of the night sky brightness at Xinglong Observatory in the future, not only for monitoring but also for scientific reference.
WOS记录号: WOS:000387113500012
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16890
Appears in Collections:紫金山天文台青海观测站_期刊论文

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