I'm plagued with high humidity and condensation every evening and morning in the dome. Bay walls are moist, counterweight is wet in the AM if i dont cover tightly.
So far the fix on the counterweight at least does seem to be running a fan medium aimed at the pier (10" pvc filled with concrete). But the levels in the dome are still peaking at 90%. I've sealed off the floor areas and cracks on the walls on the outside mainly for prevention of moisture.
I have a toolbox storing things like an asi294mc and eyepieces, i havent measured the drawer humidity yet, but i'd have to assume that its the same as the rest of the area.
So at this point it feels like my options are use the fan and find some way to lower drawer humidity, or go the route of a dehumidifier (what happens to the exit tube in sub freezing temps), like this unit: https://www.amazon.c...0?ie=UTF8&psc=1 (the top of it only has about 1/2" clearance under my bay table though). I might just try to get this solution working (and verify it really does work in the nexdome)
My small ceramic (750/1000 watt) heater does lower things pretty quickly, but would be too expensive and would create an imbalance in temps for spontaneous viewing sessions.
It was mentioned that the DD122FW Classic is another good choice/shorter and works in low temps, however that doesnt seem to be sold in the USA.
One person in the nexdome group seemed to say that they used 1/2" foam padding on all walls/ceiling and it worked, however, i tried just 6 2x2 squares "hung" not glued though, to the wall and no change was observed.
Thanks in advance for any suggestions