i am following you,
If i look at the stars say in the "trap" with my 12mm, i have the stars going to points, but if i move the focusser slightly out of focus, i get the outside focus, ie the star grows hair for want of a better term!
Given image is upside down and back the front and the focusser is on the left hand side, which primary screw should i start adjusting and by what increments ie 1/4 turns???
thanks mate
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