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Dew Shield For Newtonian

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Hey guys

I was wondering if a dew shield would prevent my secondary mirror on my 5'' newtonian reflector from dewing up, or if it simply postpones the inevitable? Especially if I am imaging at a target high in the sky, wouldn't the heat then escape by radiating up anyway? I am looking at a solution for it, as it is quite annoying having to go get the hair-dryer and blow air on it every 15-20 minutes. Is a heating band a better option? If so, I just need to find one that has a plug I can use, as I am hooked up to main-power and not a battery, and having Danish sockets. Any other suggestions would be very welcome

-Mathias M. M.

Edited by The-MathMog
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