等高仪（Astrolabe），是天文学专有名词。等高仪为二十世纪初法人克劳（Claude）及德延谷（Driencourt）所发明。主要分为棱镜等高仪和光电等高仪两种。
在光子计数资料的处理方法设计不完善时，有可能会大大影响光电等高仪的观测结果。
The observing result of a photo electric astrolabe is largely affected by the processing method of photo counting data.
在此基础上求出了组间差变化率曲线，进而分析研究了上海地区等高仪经纬度测量值周日变化的规律。
A study of the rule of the diurnal variation of latitude and longitude, obtained with the astrolabe in Shanghai, leads us to the hypothesis that the diurnal var...
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