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Hi Marc
As Dennis said, nice work, enjoying yours and everyone else' planet images.
I seem to have similar difficulties to yours when it comes to focusing, the main one I put down to the seeing conditions.
Have checked and rechecked the collimation and take much care in trying to get best focus. My method, using SharpCap, is simply watching the enlarged image on the screen while twiddling the fine focus knob. With Jupiter it is mostly getting the moons as sharp a point as I can discern, though that is sort of wrong because at the focal length I'm using with the 10" newt, the moons are actually tiny discs not points, like the stars.
Tried using a motorized focuser but it didn't really seem to make finding best focus any easier than manually. Maybe i should try a Bahtinov Mask and see if it helps but don't have one to fit the scope, yet.
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