***Note: this is the opposite of the adapter that would allow 2" diagonals and eyepieces to be mounted to the rear cell of an SCT.
Asking $12 shipped in the continental U.S.
This adapter allows SCT accessories to be used in 2" focusers or diagonals. This came with a Lumicon Cassegrain Easy Guider and is in good working order but does have some set screw marks and scuffs from use. The groove that the focuser or diagonal set screws set into is thin which is perfect for the back of Lumicon guiders or for JMI NGF focusers (...and probably any other 2" tube that would accept a "low profile" 2-inch-to-1.25-inch ep adapter...) but seems a bit too thin for Tele Vue diagonals and SCT-to-2-inch adapters since these have their set screw farther down the tube. This adapter will still work with a Tele Vue diagonal or SCT-to-2-inch adapter but the set screws will contact this adapter slightly below the actual groove.