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Hi Andy , not to bad at all and you have not blown out the core and trapezium stars. You are jumping in at the deep end with that ota though. 1250mm focal length needs very good alignment and f13.9 is not really fast enough for deep space imaging. Most people try and keep around f5 and under when starting out. Have you tried a camera on one of your 130mm newts? You will be surprised at what a difference a drop in a few f stops will make.
Rick
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