Back in New England, either a dew strip or a hair drying was a standard part of the kit if you had a refractor or SCT. On large reflectors, I tended to see heaters on the finder scope and the eyepiece.. On Dec 22, 2006, at 9:31 PM, Chuck Hards wrote:
Do any of you large Newtonian users employ a secondary heater for anti-dew/frost use?
I've never used or needed any kind of optic heaters; a conventional tube acts as a really long dew-cap. I was wondering if dew or frost is a problem with open-frame, truss-tube Newtonians?
Oops, I have used a small chemical hand-warmer rubber-banded to the eyepiece, but that's it. Prevents fogging in cold weather, and brain freeze.
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