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Rodney,
I have a very good SW ED80 (Pro "gold") which gives very good results - it comparison tests (close double stars etc) it actually gives my ol' Genesis a good run for it's money!
I've never felt the need to test the objective (Foucault/ Ronchi etc) but if it would help you I can set it up both with a webcam and on the bench.
BTW which magnitude star did you use for your test? Altitude of star?
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