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Hi Paul
Yes I finally saw the rings.
I used a 6mm ep in my 10inchf4 and defocused slightly on a bright star and I saw them.
It was small as the magnification wasnt high.
I'll try it with a barlow and the 6mm.
If you defocus too much then it becomes a white disc with the secondary shadow in the middle.
But as someone asked here, how do you know which to adjust, the primary or secondary if the rings arent concentric or centered.
Cheers
Alistair
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