I'm with the masses, it is a stunner.
I also believe the difference in respective focal lengths is not the issue. To prove this I went through a stage of using a converted 50mm finder for a guide-scope, with the QHY5 unceremoniously stuffed in the rear. Worked a treat and guided a nice NGC5128 taken at 1800mm with my Mak.
I reckon also to try the OAG since it is there and see. While the visual look may be ugly, like has been said, the pixels may not care.
Gary
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