Standard unheated dew shields prolong the onset of dew formation. Depending on your geographic location, a simple dew shield may be all that is required. (Dew shields are also great for blocking stray light from reaching your optics.) However, in moist climates, dew can still creep up on you within a short period and your viewing session is over.
Why not add some heat?
Astrozap Flexi-Heat Dew Shields direct the heat right to your optical tube assembly, thus eliminating any chance of dew formation.How does it work?
The source of heat is a thick film heater manufactured for operation at 12 volts. Sixty-six percent of the surface area is heat emitting - this means more even heat distribution and no localized hot spots or burnouts often associated with resistance wire heaters. Best of all, it won't create heat wave disturbances.
Astrozap Flexi-Heat Dew Shields are made from durable yet light weight ABS plastic and lined with black felt to help increase contrast. A 2-inch sewn neoprene rubber “Mega Grip” material wraps snugly around the telescope optical tube assembly, keeping the dew shield in place, and eliminating any chance of dew formation!
Supplied with a six foot phono-plug cable.
NB: To get power to your Flexi-heat Dew Shield, you will need a Dew Controller (for heat regulation and multiple heater strips). Astrozap Dew heater tapes are compatible with most controllers including those from HitecAstro (see below) and Kendrick.