选址与日冕观测组知识库

大气总水汽含量是天文观测和气象科学领域最为重要的参量之一。介绍云南天文台研制的新一代日晕光度计反演大气水汽含量的原理和方法,分析了新一代日晕光度计在天文选址和气象科学中的应用,给出了其在丽江高美古地区测试的结果,并和其他仪器测试结果进行了对比分析。结果表明:新一代日晕光度计反演大气水汽含量方法直观,性能稳定,能很好地应用于云南天文台的西部太阳望远镜选址及气象科学研究工作。

The total precipitable water in atmosphere is one of most important parameters in astronomical observation and meteorology. The measurement of total precipitable water in atmosphere by means of the Sky Brightness Monitor (SBM) is described. SBM is an exact tool used for precisely measuring various atmospheric parameters. The principles and method of measurement, the calibration method, and the performance of the water vapor measurement instrument are discussed, and the measurement results are given. The results indicate that the multi-color photometric system of SBM can be used for the site survey in the western China for solar instruments.