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You still seem to have flexure related problems. Stars are not round at full res in every corner, but are very close. It makes me wonder what is going on here if you need to go to this extent to solve star shapes. Is the back of the scope not capable of supporting the load? Is the FLI gear flexing (most like as I have heard this before from other guys) particularly at the connections to the filter wheel? Or are you getting flexure from the dove tail setup. Also why not go 30 minutes on your subs? Doing subs at 1 minute, then 5 minutes, then 10 minutes, then 15 minutes, then 20 minutes, then 25 minutes and then finally 30 minutes will give you a clear idea of what is going on. Each image you have produced in the last 6 months has had elongated or odd stars near the corners. This one is about the best with stars approaching round, but still slightly elongated. I would be very reluctant to buy one of these scopes having seen these issues with a very expensive scope. Just my opinion though and each to their own.
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