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I can't fathom out for the life of me why any 2" accessory needs to enter the draw tube at all, the focal point is well outside the draw tube; certainly eyepieces, barlows and collimators don't.
The 2" adaptor allows accessories to slide in about 50mm, how much more do you need?
raymo
Last edited by raymo; 23-10-2018 at 04:49 PM.
Reason: more text
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