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Clare & Peter, I cool all my Solar cameras, the chip temperature with cooling is stable at about 32 degrees, uncooled the temperature is around 48-50 degrees. If the camera gets too hot the performance suffers and the sensor chip will degrade over time.
At the end of a four hour session the camera body is still cool.
I run a 12v Peltier module at 6v which lets me utilise a smaller heatsink and fan to keep the weight down as there is a fair bit of weight in the image train when using a Combo Quark with a Baader tz4.
I use a ZWO ASi 174mm and a ZWO ASI 290mm.
Martin
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