I have seen the material on CN.? When I purchased the scope a few years ago, the corrector was centered prior to delivery.? If it was centered prior to me taking everything apart is unknown.? What I was seeing was a clear difference between the outside/inside defocused images, the secondary shadow was off a bit between the two.? The rotational alignment was clearly off for the corrector, assuming that the sharpie mark on the primary is the alignment mark.? This will hopefully account for why this OTA is such an optical dog.? As for centering, I was thinking of putting a center dot on the secondary.? That might help.? As this is purely a poke around visual scope (have bigger and better OTAs for research purposes), not going to go nuts with it.? But it is a bother so will spend some time trying to get it figures out.
Thanks, Mike
