محول OPTEC-4300 إلى Optec/DSI أنثى 3.5 بوصة (19830)

This adapter threaded onto my Gemini rotator perfectly, no wobble or fuss. Now I can swap in different 3.5-inch spacers without hunting for separate threads. Really solid machining for the price.

Finally a clean way to attach all my 3.5-inch spacers to the camera side without any thread mismatch. The adapter threads on smoothly and holds everything securely, exactly what I needed for my imaging train.

Was a bit worried about thread compatibility but this adapter screwed on perfectly to my Gemini rotator. The aluminum threading feels solid and precise, no wobble at all when attaching the DSI spacers.