'MrJones' wrote "but you still need the whole scope and mirror to equilibrate for best results".
Actually, MrJones, you DON'T!. You've apparently missed the point, and the real science, that was being made by 'yellobeard'!!
'Ron359' wrote "that insulating the tube will only prolong the 'agony' of cool down to equilibrium'. I don't think you quite get it Ron. You, and everyone, should just forget the word COOL! This is not about a different way to cool-down your Scope more quickly. It's about eliminating the air currents that cause lousy viewing. It works in high or low humidity, high or low temperature deltas. And you can use your scope, with no mush, distortion, plumes, etc., the minute you take it outside, providing the insulation has been applied inside! Just forget "cooling", and EVERY other thing you were taught about what has to be done to an MCT or SCT prior to using it. And, as to equilibrium, yes, at some point during the session, if it's long enough, there will probably be an equilibrium of sorts. But, so what? The perfect views haven't changed all session.