IRF90 Visual Adapter 2″

Finally, a solid way to use my 2" eyepieces with the IRF90 focuser—the threads cut cleanly and lock tight without any wobble. Paired with the right PlaneWave adapters, it’s a seamless setup for critical observing sessions.

The adapter threads on smoothly and feels solid—no wobble at all. It lets me use my 2" eyepieces with the rotating focuser exactly as needed. A straightforward upgrade that works perfectly.

Finally, I can use my 2" mirror diagonal with the IRF90 focuser without any wobble or slop. The aluminum threads engaged perfectly right out of the box. This adapter made the upgrade to larger eyepieces seamless.