The baffle is my preferred option too. Side fans are probably a bit too much of an overkill for small mirrors. The baffle is a much easier choice to play with. Maybe make it stiff enough and fix it to the tube to keep the tube in shape with the mirror cell removed.
If the scopes are really well cooled the layer doesnt bother me, but when their not......
I'm the same as you Geoff, it's on my to do list .
I've enclosed the bottom of the scope and fitted the variable speed to the fan, just need the right baffle, in the right spot.
|