冷凍ccd制冷問題
Re: 冷凍ccd制冷問題
There are several points you may need to consider:kurt 寫:現在用的Sbig ST8300m 的制冷效能是約室溫 -35c , 但發覺近來晚上氣溫已經達到 27-28c , 結果ccd 的溫度只能降到-8c 左右, 效果不是太理想
不知可有辦法做二級冷凍,如把ccd camera外殼冷凍或造一個冷凍盒把ccd camera 整個冷凍......?????
有師兄有辦法嗎??
thanks
1. adding a 2nd stage is one, but you need to consider the mechanical modifications involved, and the electrical power requirement. You also need to modify the cooling. The cooling fan may not be able to handle the extra heat.
2. you may also change the cooling fan (air cool) to water cool. Of course, you may also like to cool the cooling water (there are many of such device for computer CPU, available in Golden Arcade). This way you will control the hot side of the Peltier device to the temperature of the cooling water (say 4 or 6 degree C, then you can have about -30C for the CCD. This is a better way because the temperature can be kept fairly stable (as compared with the air cool method). Of course this method requires more modifications.
PTS
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