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This one has a Televue Paracorr and they specify the spacing as 55mm +- 4mm so the tolerance is pretty wide. My spacing with the new camera looks to be almost perfect with the M42 adapter in the Paracorr but Geoff who I bought the scope from is going to mail the M48 and M54 adapters he has as well. The M54 I think consumes about 1mm more spacing so hopefully that will work as the OAG I am using also has an M54 plate to bolt in place of the M42 telescope side. Mix and match with M54 on the scope side would be handy to be able to set the OAG prism further back without obscuring the incoming light to it.
Once I am satisfied the spacing is right I will get a bolt on adapter made for the camera side to get rid of all the screwed connections and ensure the prism lines up perfectly with the long axis of the sensor. Win win, easy setup and better rigidity.
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