|
Hi All,
Yep plenty of good advice here so far but I'll just add this snippet: The aim of adjusting the focuser in this way is to ensure the draw-tube on the focuser is parallel to the light-beam produced by the 'scope and that consequently the eyepiece elements are square to that incoming beam.
It's easy to see that if it is skew, so too will be the view!
Best,
Les D
|