I use this adapter block to mount my ASI Air Pro to all my refractors that I use for imaging and autoguiding. My refractors each have an ADM V-series dovetail bar (inverted) on top of the tube rings. It’s a rock solid way to carry accessories using ADM’s VPA-FF-V -series dovetail adapters . I’m a big fan of all ADM products – superbly designed and finished! Customer service is exemplary – second to none.
