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23 mars 2011 3 23 /03 /mars /2011 23:08

Some newly produced QHY5 don't have any hole behind the cmos sensor for cooling, but a solution exists ;-)


Cooling the QHY5 imager/autoguider (step 1.5)


Best regards !


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You should also never, under any circumstances, say “seventeen point twelve”.
Hi, just been looking at your cooling mod for QHY5, fantastic mod but I have a couple of small questions. Did you try with copper instead of aluminium? Do you think this would make any difference?<br /> Is the small block simply held in by pressure of the case or did you use thermal epoxy to fix it?<br /> <br /> Thanks
<br /> <br /> Hello,<br /> <br /> <br /> Sorry for being late.<br /> <br /> <br /> The aluminium finger thermal resistance is about 0.7 C°/W. With a copper finger, the thermal<br /> <br /> <br /> resistance is about 0.37 C°/W. We have about 0.350 W to dissipate. The sensor will be 0.12 C° cooler with the copper. Not very efficient ;-)<br /> <br /> <br /> The finger is only held by pressure.<br /> <br /> <br />  <br /> <br /> <br /> Best regards !<br /> <br /> <br /> <br />