Orion Observer Focus Tube to T-Mount Prime Focus Adapter
Made these 2 parts this to adapt the external threads on my Orion Observer 134 focus tube to T mount adapter. One design is intended to glue a 1.25" to M42- T Mount adapter into the adapter ring so that filters can still be attached, and the other piece is just a straight adapter from the focus tube to straight to an M42x0.75 thread. The eyepiece holder unthreads from the silver tube, exposing a set of threads for either of these adapters to be installed on.