中文摘要：

为评价云南天文台抚仙湖太阳望远镜的圆顶视宁度，研制一种能测量常温、微温的仪器。在天文建筑物附近，安放两个微温传感器，可以测量影响天文观测的湍流强度的分布情况。介绍微温传感器的工作原理、硬件设计、软件设计以及仪器的测试。实验结果表明，该传感器具有较高的分辨率和较快的热响应时间，它将对望远镜建设物的设计具有实际意义。

英文摘要：

For evaluating the dome seeing of the solar telescope at Fuxian Lake of the Yunnan Observatory, an instrument has been designed to measure the normal temperature and microthermal fluctuations. In the vicinity of the astronomical building, two microthermal sensors were set up to measure atmospheric fluctuations in the surface layer. The overall structure of the system and the working principle of the microthermal sensor are presented. The hardware design and the software design of the system are in- troduced. In the end, the microthermal measurement has been carried on at Fuxian Solar Observatory. It is proved that the instru- ment reaches the high resolution and has fast respond time. The microthermal sensor has practical significance for the design of the astronomical building.