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Thanks. I posted on cloudy nights and Jim wrote same thing back to me. I have. 2 inc extension so will try this and see if it sorts out the issue.
One other question for you guys. When doing first course collimation to align secondary under focuser. How are you sure the rotation around center bolt on secondary is correct. Visually the secondary mirror in sight tube appears round but you cannot ate at least 5 or 10 degrees each side and it still appears round so this is not overly accurate. Does it matter ? Which tool confirms the secondary is projecting full image back up into focuser tube in the correct plane ?
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