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So all, i used al's collimation aid and as best i can see with my eyes, everything appears to be perfectly concentric and looks great. This seems to match what i'm seeing in my Takahashi collimating scope.
Checking the shadow of the primary, that also seems pretty central as far as i can see.
Looking at the image i attached, i can see elongated stars in all 4 corners, which all seem to be in opposite directions.
So in the top corners of the image, the stars are elongated in opposite directions (Top Left = NE to SW) and (Top Right = NW to SE )
So how do you adjust for elongated stars in opposite directions ??
Many thanks in advance,
Rich.
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