Thanks for all the replies, a lot of great ideas.
I live in an area with high humidity and the dome ventilation works very good so that's my issue where the dome heats up fast when the sun come out and the scope and mount is cool and will condensate. I only have a limited 12 volt power supply so any 120 volt items are out of the question.
So it looks like a huge bag that ties at the mount with silica gel pack seems to be the best solution. This will stop the rapid temperature change and control the moisture left inside. I don't remember my scope ever being dripping wet when viewing in the dome and know that bagging a dripping scope would be a problem.
I will do the nanoprotec also, seems like a good idea for protection.
I'm I missing something about the bag or telegizmo with the open bottom? Would the cold mount cool the air around which of course would drop down and be replace with warm humid air and condensate.