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see the problem isn't steming from not being collminated. its unlikely that my normal method that has been tried and tested many many times and a Astrosystems collminator that one of the guys that was out there uses on his big dob couldn't get it right. there has to be something else at play here.
Thanks DavidAU for those star patterns, unfortunately its not like any of them really. as when you go from one side of focus to the other the star is oblong not round and it changes in direction on either side.
multiweb, just so im getting this correct the astrosystems laser collminator put the spot right on the primary center. would this not correct for any miss alignment, or is the focusing tube itself skew and not normal to the axis of the tube? If i was to put a laser in there and rack it out and in would this show any error in the tube?
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