I am in the case of "Derpit" with a focal ratio of f / 3.
Therefore, I am also interested in a 36mm filter wheel dedicated to 2600mm.
However, the camera and the wheel should be placed in the primary focus (like RASA or FASTAR) of my Newton 500 f / 3.
I must therefore take into account of the wheel obstruction on the optical path.
To reduce this obstruction, I am more interested in a wheel with only 5 positions.
Are you also considering this type of wheel with minimal obstruction?