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Cool. Thanks very much for the tips. Must admit I had my breath held while swapping the focusers already, let alone pulling apart the actual unit. But I'll see how I go.
Will contact Bintel about what they recommend for finder attachment.
And the collimation question - nothing required?
@Ponders - I didn't mean that the focuser will only go one way. The holes are 120deg apart. But if you can imagine that on the OTA the holes are at 12, 4 and 8 o'clock, yet on the focuser they're at 2, 6, and 10 o'clock.
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