Hi all, I have just put dew heaters on the finder scopes, a removable one on the eye piece and a heated box for the other eyepieces on my 10 inch DOB.
They work well, but I need one on the secondary mirror and was looking for ideas first. I was not sure if resistors behind the mirror, or a small fan would work. I'm open for suggestions.
Cheers,
Geoff
