What do people use to prevent or remove the Eucalypt air borne sap bubbles that get respirated out of these trees constantly? I am constantly battling with this stuff on my exposed optics, scope tubes, accessories and cables, etc.
I have a large bush reserve at the rear of my property which is the source, so I can't just cut them down. Strangely it never seems to be a problem with the Dob, maybe because the rear fan is pushing the air out the front and preventing this stuff gettting inside on the mirrors. There is not much I can do to move the mount location away from the trees, although there is no overhang at all and I have already moved as far away from the rear boundary as I can. Any westerly breeze pushes it but it seems worse when there is no breeze (gravity and proximity no doubt).
How do you cope, and no I won't be moving to a city, or the desert?
PS, I know the best solution is probably an observatory with positive pressure from a fan but I can't afford that, unless I win the lottery.