That fov is insanely huge and pinpoint from corner to corner. Very cool.
Regarding the AO discussion I agree with mount correction and improved guiding with a tilt/tip system but I honestly can't see how seeing related to one star in the center of the fov could possibly correlate to the stars on the entire field so I still think Gaston has a point.
My tilt/tip does a great job on narrow field with a smallish sensor.