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Hi Ted, sorry for taking a while to respond to your post. Have been side tracked on one of my imaging projects. The laser from the collimating tool landed just outside the outer ring of the central spot doughnut. I did notice that it move some when I rotated the laser tool in the focuser which is one of the reasons for not rushing in to any adjustments. I have also seen reference in other posts to the possibility that the central spot on the secondary may not actually be in the centre though I am unsure as to how you would check this. My setup does have one of the Bintel collimating rings but for now I am holding off until I get a chance to take some test images so that I can see what I am working with.
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