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I have the QSI setup.
It's a block that bolts onto the back of the heatsink on the camera. Takes heat away from the heatsink. You don't remove the heatsink/TEC from the camera.
I use 1/4inch tubing and a low flow rate. I'm using a fairly flexible tube and run it off the scope via the counterweight shaft. No vibration issues. You don't need a powerful pump - it syphons around.
I use a 20litre drum of water - it will slowly warm up during the evening. Don't try cooling the water with ice. If you lower the temp of the heatsink below the dew point, you'll have a lot of water condensing on the camera and potentially fry the electronics.
I don't use mine often. Bit of a pain to setup and I'm happy with -20 during winter. May use it this month seeing it's still a bit warm.
Happy to answer any other queries.
DT
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