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Post by Deleted on Jun 14, 2014 4:33:22 GMT
Hi, Further to the Peltier experiment by hemmi, here is a link to something I concocted back many years ago, it might give you some ideas. Just dropping the internal components of the camera even a reduction of 10 degree C below ambient made quite a difference. It was a fun project back then. This modification uses a fluid cooling heat exchanger and no fans. One point that is important, I packed indicator silica gel in packets inside the camera housing to keep the camera dry. At no time did I allow it to become frosted up. This would melt when cooling turned off and possible cause a short somewhere in the circuitry. I practice, I was pleasantly surprised to see how little cooling I needed to achieve a good result. When using the Peltier I ramp up the current slowly and watch the temperature drop, when finished observing I do the reverse, ramp down slowly to ambient to avoid condensation. Here are some pics then visit the website for more pics. picasaweb.google.com/109921669020426367250/PeltierCoolingAMintron?authuser=0&feat=directlinkRemember if you get the Google page, 'click' on to go back to Picasa Albums. Clear skies... Shevill Camera mounted with focal reducer on 12" f/5 working at approx f/1.7 home built Newtonian. Modified camera, home built Peltier controller-ramp up/down, coolant container, camera controller etc. Fitted with a fast f/1.0 Rainbow zoom C mount lens for wide sky imaging. Mounted piggy back on main scope on adjustable device.
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Post by Deleted on Jun 14, 2014 5:06:23 GMT
Hi, Further to the Peltier experiment by hemmi, here is a link to something I concocted back many years ago, it might give you some ideas. Just dropping the internal components of the camera even a reduction of 10 degree C below ambient made quite a difference. It was a fun project back then. picasaweb.google.com/109921669020426367250/PeltierCoolingAMintron?authuser=0&feat=directlinkRemember if you get the Google page, 'click' on to go back to Picasa Albums. Clear skies... Shevill Thank you sir for the pics. Much more work to be done to improve my experiment on the Mallincam Jr. It is a low end cam that has responded well to Peltier cooling. Thanks Again, Patrick
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