Plossls' and zooms' field stops are smaller than the clear aperture of the MBII, thus no vignetting either. Eyepieces have sharp field stops, but when used with binos, the field stop edges are blurry and seem not to merge/overlap. And blackouts are easy too. These blurry and not perfectly overlapping edges create a slight discomfort and mild eye strain, which is a bit distracting and annoying.
Is this normal? Is this a collimation issue or something else? As said above, images in the center of the field of view are merged well.
Edit: I used binos in 10" Flextube SW dob without OGC at shorter preset, and with x2.6 OGC with poles fully extended. No issues reaching focus in both situations.
Edited by Baatar, 25 June 2020 - 11:19 PM.