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Just thought i'll bring this up as a point of discussion. Today, cooled CMOS Astro Cameras are available in plenty. QHY, ZWO and other variants of the same camera are selling for very reasonable prices. However, there was a point of time when astrophotographers used to cool down their DSLR's as a cheap OSC alternative to CCD cameras. Give a choice, I would've purchased a dedicated CMOS OSC which can cool to 40 C below ambient, but since I had a Canon 500D which I had self modded, I requested a friend Kaustav Chatterjee (an avid model railroader) to cold mod my 500D (he had cold modded his 1000D long back). This newly modded camera has a TEC12703 single peltier and cools to approximately 20 below ambient.What do you guys think?

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Good work! DIY is mandatory in amateur astronomy ūüėÄ

does it work well?

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I have just completed a similar project. Mine seems to cool the sensor down to 15 or so below ambient as reported by the Exif temp. Created for my EOS 600D. It will keep a steady Exif temp of 5 deg C on 300s subs if I put a 15s pause between exposures. Could possibly go colder when the ambient temp is sub zero but it's a balance between cooling a power consumption. It is using a 5 amp TEC.

 

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Edited by Phil

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