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One last point to help with remote diagnosis.
When star testing, I found that the stars were elongated in 1 axis but both directions. So if I have a defocussed star in the centre of the FOV, the donut may be thicker at both 12 and 6 o'clock. How do I adjust to address that ? This is what led me to believe that my primary was out - looking at it today, I don't believe that it is.
I'm v confused.
Pete
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