Just to clear up re the scopes talked about.
5" Takahashi FS128.
Obsession 18" Dobsonian.
Tele Vue NP 101 4" Apo.
Yes we are lucky to be able to view through such scopes
I would have any of them in a heart beat. Yes apature rules .
I think thats why Julian has more than one scope.
For me I will to stick with my little mak. Till I can affored my dream scope.
Oh I forgot to say "i now own my dream scope"
I use it more than any I have owned so far
and loving it.