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Well I finally got the new adapter. I installed that yesterday and took some images last night. The corrector is 79.4mm from the sensor but it looks like this is still a tiny bit too far away. So Orion Optics Website is yet again incorrect. Collimation needs some work and that might be contributing to this problem. I also note that using nylon screws to hold the corrector in place does need particular attention not to tighten one side more than the other; this being because there is just the tiniest amount of slop between the adapter which holds the corrector and the OD of the corrector and tightening one way or the other affects the correction. However, I think I am getting very close to having a working system. See attached image. The resolution looks pretty good overall.
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