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Old 01-05-2011, 12:12 PM
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Gem (Grant)
The serenity...

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Join Date: Mar 2011
Location: Canberra, Australia
Posts: 926
Quote:
Originally Posted by jenchris View Post
What's the wattage on the dew heater?
If you have a deep cycle battery, it need be no more than 18a/h I'd say, but if the dew heater is a whopper, it'll be touch and go.

P= IxV - so you've got 18 x 12 = 216watts for an hour, or 113 watts for two hours or 56 watts for four hours
Thanks. Not sure about the dew heater yet. I want to get the scope and see how much dew there is around here before seeing if a heater is needed or not. I was just trying to get a feel if an 18h was ok, or if I am dreaming. Comes from a dob background, I haven't had dew problems in the past (nor the need to power mounts or cameras!).
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