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Ah, that was another concern I had. It's a 10" dob F4.7. I collimated it using a combination Cheshire eyepiece and sight tube and a number of online guides. As best as I can tell the collimation is sound, the only concern I have is that the secondary is ever so slightly not perfectly centered on the eyepiece, but we are talking fractions of a mm... Sounds like I might need a second opinion on my collimation attempt from someone in the know.
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