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When something is almost in focus - if you hold the lens carefully in you hand, loosen the Diagonals grip on the eye piece and carefully move it in and out until you get okay focus. Note and tell us - how far from the diagonal do you have to move the lens to achieve focus? You may need a focus extension tube of around this lenght (or slightly longer) to achieve focus.
Love to see and image of the rear attachments to your OTA to confirm how you have arranged your gear.
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Also - try first racking the Moonlite focuser so the focus tube is only about 1/3 to 1/2 fully out - then try rough focusing using the C11 focuser from this point! This allows the moonlite to be of practical use in all occasions as the temperatures change.
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