Pretty damned awesome FOV given the focal length of the scope.. The joys of CCD Real Estate!
Image looks the goods.. Obviously a work in progress, as is the setup... No doubt you'll get it sorted... Given your setup, I would imagine the only ways to organise CCD orthogonality would be to shim up the threaded connectors yes?
I bet it was nice to have some fresh data... We've all been a little starved for clear skies of late..