Rather than add on to a very long thread taking it further off topic, I wanted to ask this in a new thread. Soon I'll be getting my first cat - a 150mm Mak Cass. I was reading in another thread that insulating the tube is a good way to cut down on thermal issues. I know that these scopes can have some trouble in certain conditions.
What I gathered is that I'm supposed to let the scope get to ambient temperature first, then cover the optical tube with insulation to help keep it from radiating more heat to the sky.
If that is the case, what material would be ideal? I saw aluminum foil mentioned but I don't want to risk anything getting scratched. Perhaps I could buffer the foil with some felt? Perhaps an aluminum felt sandwich? It would be cute to make a little telescope jacket for when it gets too cold. lol