Given that somehow the retaining ring had come loose before, I thought just a small drop of Loctite on the outside thread should prevent it from occurring again. I’m not the sort of bloke that carries nail polish, maybe that would have been a better choice.
After more time spent today, I think I’m close. Plan to look at some real stars through it tonight. For practical reasons my artificial Star is located outside of my workshop, and I get localised turbulence because of the heat from the sunshine. Makes it harder to see the image at the 500 times magnification I’m using in the image train.
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