[Magoo (Millie Magoo)]

I am planning ahead for the Autumn to Spring weather (since summer seems a dead loss for imaging these days). The plan is to travel to a cold and dark sky location over the new moon periods and spend a few nights imaging.

As part of the planning process, I am looking to see what I should be doing for dew/condensation control. The scope I am most likely to be using is a newtonian and that raises the issue of heaters for primary and secondary mirrors and a guide scope too.

My question is whether these are really necessary or beneficial on a newtonian. Could I achieve the same result (with no need for extra power supply) by wrapping insulating foil around the OTA. There are a couple of products around that are basically bubble-wrap with a foil skin. These would be relatively easy to cut and shape for the purpose.

I'd appreciate thoughts on this from folks who have "been there".