My cheap and nasty r&p focuser is giving me grief. When I star test I can unfocus anti-clock wise (closing the focuser) but clock-wise(opening the focuser) I run out of room to turn before the star is little more than a blurr.
I am thinking of unscrewing the large bolts that hold the primary mirror in place and seeing if the extra few mm in focal length will make any difference.
Any help in this would be much appreciated.
Gazz/Irish