Dew Prevention

It does not take long for dew to ruin our optics.
As the temperature drops, condensation forms on any cold surface in particular optics radiating to the cold of deep space.
How do we avoid this?
Dew shields can be made easily from camping mats or yoga mats. Likewise fitting dew heaters and the controller gently warms the optics to keep them above the dew point.
With these simple steps, we can observe indefinitely even in a cold and damp climate.