yes, where's the fun or challenge?
I own a nice enough cheap bino.
What I would like is to have exchangeable eyepieces and filter threads to battle the light pollution outside my window.
no answer yet re the diameter of the 60mm tubes.
But I found the adapter that would be working with my mirror lens to morph into a telescope
http://www.baader-planetarium.com/en...-part-14).html
I'm lucky to have a T2 lens, apparently. Because other bayonets have an even shorter focal path.
For those lenses like Canon EF and such there are "lens2scope"-adapters which don't fit 1.25" eyepieces but come with extra 10 and 20mm ones.
If it turns out that the 60mm scopes are also too wide I'll get that adapter and check whether there's anybody in my city who has a binoviewer and lets me test it in my lenscope.