Peter
I've noted your comment in your earlier post about the TS 2.5" OAG
I've got one of those and it works for both my 80mm & 120mm refractors on a MoonLite focusers - however I would have thought that this model is what you would actually need in your case for the f/4 newt -
http://www.teleskop-express.de/shop/...elescopes.html
BTW Patrick should have advised you with the correct model for your usage - it would be interesting if you could actually use the TS 2.5" OAG with the newt - would love to see your assessment after you've worked out how everything fits - because then I would save heaps by using mine for my 12" newt without having to resort to the other model which I highlighted in the preceding paragraph
Cheers
Bill