Jupiter f25 8/1/07Posted By Dan Petersen |
Hi Steve, I've found that the solution to cool down is to prevent scope heat up in the first place. My entire observatory is insulated from top to bottom, this allows high resolution daytime imaging. For most night time imagers there is another benefit. Very thin domes (like aluminum) will super cool to below air temperature on chilly evenings causing cold waves to descend upon the telescope, these will absolutely destroy otherwise perfect seeing conditions, each cold wave acts like a separate lens when your scope is close to focus you'll notice their multiple image effect in the eyepiece. I've found that an insulated dome completely eliminates this problem. Cheers, Dan 8)
