Get thee a 2" low profile crayford focusor , and the buy either a Tele Vue Visual Paracorr or a Baader MFCC or both. (both is idea - you can view conveniently without needing to use complicated sets of spacer rings with the Paracorr , but it's not much chop for imaging , that's where the MPCC comes into it's own.
if you are interested in astroimaging , the MFCC is the go , it'll go straight onto the camera bayonet and act as your 2" nose piece , simple as that , providing you aren't going to use an off axis guider (it gets complicated the as spacings are an issue .... I don't think anyone has sorted that one out with the usual off the shelf OAGs (Lumicon 2" Newt EayGuider, etc).
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