[TRADED/FOUND] Dewshield for 8" Celestron

Strawb (Dave) · #1 11-12-2011, 06:38 PM

Dewshield or else dew heater system for C8 wanted

Cheers

Poita (Peter) · #2 13-12-2011, 10:13 AM

I bought a camping mat, cut it to size and stuck it on the end of the scope. Works a treat and is super cheap.

rainwatcher (Peter) · #3 13-12-2011, 10:48 AM

I made one once out of stiff card with some resistors and a small battery. No problem with heat haze from the resitors. Just calculated the wattage I wanted and used Ohms Law.

rainwatcher (Peter) · #4 13-12-2011, 11:55 AM

Have a look at this in projects before spending money.
Good design stuff from Alan Sheehan

Build a Dew Heater from Resistors

Strawb (Dave) · #5 13-12-2011, 06:08 PM

OK guys - many thanks