Phil,
Fantastic looking scope
well done!
I've been thinking of building a filter slide for my dob, similar to yours. I
dont suppose you have had enough time to trial it. But I would like to
hear if you have any dewing problems with it.
btw, if you dont mind me asking... what height are you? it would give me
and idea of the size of your scope.
Great to see Mark making mirrors faster than F/4, I wasn't aware he was
doing that.
Cheers,CS