摘要
杜瓦是天文观测终端设备重要的部件。本文总结了我们研制二级热电制冷杜瓦中的一些重要经验 ,其恒温点依不同的系统可以改变 ,方法可供有兴趣的同行参考。试验表明 ,这套系统温控精度能达到± 0 .
CCD is an important component for the astronomical observation.Because of the noise and dark current,CCD must be cooled to low temperature.Dewar is usually used as a container to cool the CCD.It is a very important component for the terminal in the astronomical use. There are two kinds of dewar:the LN 2/LHe dewar and the thermoelectric cooling dewar. We have set up a Peltier (thermoelectric cooling) dewar recently.In this article the principle of thermoelectric cooling and the particular use of thermoelectric cooling are illustrated.The necessity of the thermoelectric cooling dewar is also analysised.In the design,there are two pieces of Peltiers to cool the CCD.We provide the regulate voltage to the second cooling pile,and the current of the first cooling pile is controlled to get stable low temperature for the CCD.The cooling temperature can be changed when needed.And mechanical structure of the thermoelectric cooling dewar is introduced in this paper. In the end of the article,the experiments for the circuit of temperature control are described and the preliminary results of the experiments are also given.It is shown that the disturbance is less than ±0.1℃.
出处
《云南天文台台刊》
CSCD
北大核心
2002年第1期29-34,共6页
Publications of the Yunnan Observatoty
