Feather Touch® Micro Telescope Focuser for Celestron 6″ Evolution Schmidt-Cassegrain Telescope. This focuser will also work on some of the Celestron 6SE telescopes.
For the Celestron 6SE, you will need to measure the outside diameter of the flange of the stock focuser (the part of the stock focuser that mates to the rear cell, as Celestron uses 2 different size of flanges, 1 that is 1.5″/38mm and 1 that is 1.6″/40.6mm.
Feather Touch® Micro Telescope Focuser for Celestron CPC-800 / NexStar6SE & 8SE Schmidt-Cassegrain Telescopes
If your telescope is less than a few years old, check the style of the back cell to see which version of the Feather Touch® SCT Micro Focuser you need: If your telescope has a flat back (left picture), you need the standard “C” Micro Focuser. If your telescope has a triangular pattern on the back (right picture), you will need the “CPC” version of the Micro Focuser.