Hi Paul
Hmm, I don’t know the answer to that, but from memory, I believe a 12VDC 1A mains adapter would have been adequate?
My SBIG ST7E mains adapter has dual outputs of 12VDC at 500mA and 5VDC at 2.0A. It has x2 chips (imager & guider) and I think the 5VDC is for them, so the 12VDC at 500mA is more than likely for the Peltier?
The ST7E has a regulated temperature setting where you can set the value and it will maintain it at the set point, whereas the Orion just runs flat out with no temperature regulation.
Cheers
Dennis
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