Hi Raymo,
I focus with a bahtinov mask. My 5d is a Mk1 so it doesn't have live view but I do spend a lot of time taking focus shots and viewing them before I start my sub sets.
This particular set up suffers a lot from coma and vignetting at the moment and this object went way off centre during the session. Hence my comment about knowing it wasn't a great set. I'm still pretty happy with the photo though given where I've come from.
Do you have a pic of yours for comparison from an f10 SCT unguided so I can see what mine should look like ? So I can compare apples with apples ?
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