Hi,
I own a saxon 8" newt.f6.I have the exact same problem with achiving focus, it seems that the focusser won't go in far enough..i have heard that moving the mirror up the tube would help but looking at my morrior i can't see how thats possible..I have orderd a lower profile focusser, the crayford one that andrew's sell..this may fix the problem, it may not..but the new focusser is a good upgrase anyway..
I hyave been able to get focus useing eyepiece projection..i used a 25 mm pl, and also a 10 mm pl worked quite well...good luck
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