Andy, can you be clear about what kind of Newt you have, there are some setup for visual use and some for imaging. The visual configured newts may not achieve camera focus, because there is not enough in-travel on the focuser position. An imaging configured Newt works well focusing a camera, but may need a focuser extension tube to be used visually.
There will be all sorts of advice about reconfiguring your scope but we really need to know what we are starting with.
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