天空
亮度
红外线的
天空亮度
探测器
光学
遥感
物理
红外天文学
亮度温度
天文
环境科学
地质学
作者
Jinting Chen,Qi-jie Tang,Jian Wang,Hongfei Zhang,Jie Chen,Shu-cheng Dong,Y Zhang,Jun Zhang,Feng-xin Jiang,Duo Li,Qingfeng Zhu
出处
期刊:Journal of Astronomical Telescopes, Instruments, and Systems
[SPIE - International Society for Optical Engineering]
日期:2020-08-13
卷期号:6 (03)
被引量:1
标识
DOI:10.1117/1.jatis.6.3.036001
摘要
The infrared sky brightness level is an important parameter for infrared astronomical observation from the ground. It is necessary to obtain the infrared sky brightness level at an observatory site to evaluate the feasibility of infrared telescopes and instruments. In order to evaluate the possibility of developing infrared astronomical observations at several sites in China, the design of a continuous-scanning near-infrared sky brightness monitor (CNISBM), measuring 2.5 to 5 μm infrared sky brightness based on an InSb detector and a linear variable filter, is proposed. The optics and the detector were put in a vacuumed cryogenic dewar to reduce the background emission. The CNISBM has been tested by measuring the flux intensity of the observing window in the L-band. The results show that the sensitivity of CNISBM satisfies the requirements of the observations of 2.5- to 5-μm near-infrared sky brightness.
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