If you’re looking for a smoother focus on your Astro-Physics, but the telescope has a 2.75-inch connection, then you need an adapter. This Astro-Physics adapter connects that 2.75-inch connection to a 2-inch focus on Starlight Instruments. This allows you to replace the original focus with a Feather Touch, known for its smooth movement.
Astro-Physics refractors come in different connection sizes, so first check to make sure your connection is really 2.75 inches. That check applies to every Single refractor tube where you place a different focus.
Also pay attention to the length. Another focus lens with an adapter can shift the focus point, so check after assembly whether you still have enough reach in and out for your eyepieces, camera, and viewfinder. a 2 inch diagonal.
If you have a Stowaway, check out the adapter for the Astro-Physics Stowaway.
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