Dew heaters

[malc-c]

Having been out here for a couple of hours I'm already being plagued with dew. Im looking at either making the controllers or buying them, same with the heaters. What I would like to know is where to put them, as it's the secondary mirror that is being affected the most. I can see the logic in placing one round the corrector plate on an SCT, but on a 200P ??

[perfrej]

Insulate the scope. The 200P radiates heat like no other scope. I wrapped mine in sleeping mat and I have had no dew problems after that.

I wrote a long thing about it. Search the forum for posts from me and you'll find it.

All the best,

Per

[malc-c]

Per, thanks for the suggestion, and I'll do a search later. The scope is housed in an observatory so shouldn't be able to radiate heat as such?