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Near infrared sky brightness measurement using an InGaAs detector
Author(s): Yi-hao Zhang; Qi-Jie Tang; Shu-cheng Dong; Jin-ting Chen; Feng-xin Jiang; Zhi-yue Wang; Ya-qi Chen; Ming-hao Jia; Jie Chen; Hong-fei Zhang; Qing-feng Zhu; Peng Jiang; Tuo Ji; Shao-hua Zhang; Yong-qiang Yao; Yun-he Zhou; Hong-shuai Wang; Peng Tang; Jian Wang
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Paper Abstract

Tibet is known as the third pole of the earth. The Ngari (Ali) observatory in Tibet is a good site, and promising to be one of the best place for infrared and submillimeter observations in the world. However, there is no data available for sky background brightness in such place. In the near infrared band of J, H, Ks, a NIR sky brightness monitor (NISBM) is designed based on InGaAs photoelectric diode. By using the method of chopper modulation and digital lock-in amplifier processing, the SNR (Signal Noise Ratio), detectivity and the data acquisition speed of the device is greatly improved. The NISBM has been installed in Ngari observatory in July of 2017 and obtained the first data of NIR sky brightness at Ngari observatory.

Paper Details

Date Published: 6 July 2018
PDF: 6 pages
Proc. SPIE 10700, Ground-based and Airborne Telescopes VII, 1070051 (6 July 2018); doi: 10.1117/12.2311993
Show Author Affiliations
Yi-hao Zhang, Univ. of Science and Technology of China (China)
Qi-Jie Tang, Univ. of Science and Technology of China (China)
Shu-cheng Dong, Univ. of Science and Technology of China (China)
Jin-ting Chen, Univ. of Science and Technology of China (China)
Feng-xin Jiang, Univ. of Science and Technology of China (China)
Zhi-yue Wang, Univ. of Science and Technology of China (China)
Ya-qi Chen, Univ. of Science and Technology of China (China)
Ming-hao Jia, Univ. of Science and Technology of China (China)
Jie Chen, Univ. of Science and Technology of China (China)
Hong-fei Zhang, Univ. of Science and Technology of China (China)
Qing-feng Zhu, Univ. of Science and Technology of China (China)
Peng Jiang, Polar Research Institute of China (China)
Tuo Ji, Polar Research Institute of China (China)
Shao-hua Zhang, Polar Research Institute of China (China)
Yong-qiang Yao, National Astronomical Observatories (China)
Yun-he Zhou, National Astronomical Observatories (China)
Hong-shuai Wang, National Astronomical Observatories (China)
Peng Tang, National Astronomical Observatories (China)
Jian Wang, Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 10700:
Ground-based and Airborne Telescopes VII
Heather K. Marshall; Jason Spyromilio; Roberto Gilmozzi, Editor(s)

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