Quote:
Originally Posted by Andy01
Thanks Geoff, I appreciate your feedback 
- Focuser tilt eh? I was originally thinking maybe it was the flattener needing adjustment, but it could well be the focuser - any suggestions on how to rectify that, other tan getting a Moonlite or Feathertouch?
Cheers
Andy |
I would have thought that if it was the flattener, all the corners would be equally affected. If it is focuser tilt then you could try carefully focusing a star on one side of the field (using a bahtinov mask for example), then focusing a star on the opposite side. If these are different (and it won't be easy to get it accurate) then the way you have to move the focuser will tell you which way things are tilted. Then follows trial and error shimming. It may also be slack in the focuser, so tightening it up may work.
Another thing to try is to put a laser collimator in the drawtube and see if the spot hits the centre of the object glass.
Good luck!
Geoff