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G'day all,
I have an AstroZap dew shield that I use on the LX200. It draws about 1.8A @ 12v and does not need a controller as the wattage is so low that conductive losses prevent any alarming temperature build up. Of course I monitored it with a thermocouple probe till I was assured of this fact.
Some nights I have had to run it at about 15v to keep the corrector plate clear; but not often.
HTH,
Doug
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