|
hmmm that is a lot worse, I would be trying to get the spacing closer to the 57mm as a starting point it could be making the difference - it may need more.
I'm not sure if design specifications is correct? doesn't it mean that it will correct somewhere (as best it can) somewhere within the range of +-4mm of 57mm (53mm-61mm)? I don't have a refractor but coma corrector's they have to be pretty close 1-2mm to work properly.
cheers
|