Interesting approach Pete. I should have a look at this...
Quote:
Originally Posted by Waxing_Gibbous
I found them to be less than effective and often leave a thin film on the mirror. Also, its possible, though highly improbable, that you may crack an optic due to the temperature differential. Though this is more likely with a lens than a mirror.
I may get pilloried for this, but I use an electric leaf blower. It shifts a huge volume of air at ambient, with enough force to shift 99% of the smuts that collect on the surface.
It also cools my 8" Newt to within a degree of the surrounding air in a about a minute.
YMMV.
|