tough yeah.....nice design and outlook.
This is what we call amateur astronomer.

Weather in sabah very nice....Can see M42 terang terang.
Sayang tak bawa balik scope.....
shah...let me answer ur question......for an example, the 50mm F1.2 means
- A 50mm lens produces an image of a distant object on the film that
is the same size as would be produced by a pinhole 50mm from the film.
- The F1.2 means aperture of the lens.
Do you understand?
So, when are u goin to test out ur new design?

Tommy