L5rEAosd I have new bench style power supply coming tomorrow rated for 13.8V and should NOT ever creep down to 11.8..
If 13.8 volts is too high to allow the ASIAIR to boot, most bench regulated supplies can be opend up and adjusted. I had two ASIAIR in a row that won't boot at 13.8V, but would boot at 13.7V (in spite of the specs saying they should work at 13.8V). Typical ZWO QC.
Use heavy cables (14 AWG) to run to the scope if it is more than 10 ft from the power supply, and adapt to 18 AWG (no thinner) in the last 3 or 4 feet so it is more manageable.
Good copper 18 AWG is 6 mΩ per foot. Together with the ground return on a wire pair, that makes 12 mΩ per foot. So, even a 10 foot run of 18 AWG will drop you by 0.6 volts at 10 feet.
Most Amazon "18 AWG" wires are really more like 20 AWG, but I did find one brand (even with silicone insulation that does not stiffen in the cold) which actually works like 18 AWG ($0.40 per foot). Their 14 AWG is $0.90 per foot, and 12 AWG is $1.26 per foot). Expensive, but worth every penny.
The other trick is to use a buck/boost regulator at the telescope.
Chen
