Quote:
Originally Posted by Dennis
I wonder if a physical object some how cuts into the light cone as you approach the point of closest focus? This would appear as an “indentation” in the circular diffraction rings.
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I thought that too, Dennis.
However I'm sure I pretty much eliminated that. It was quite easy over such a short distance to identify any potential obstructions.
No, it's definitely something related to being right at the end of the focuser's travel ... and then trying to force it past that point.
I could actually see the indentation grow bigger as I forced the focuser.