FTM-C9.25---Feather Touch® Micro Focuser for Celestron C-9.25 Schmidt-Cassegrain Telescope Feather Touch® Micro Telescope Focuser for Celestron C-9.25 Schmidt-Cassegrain TelescopeTwo Versions of the Celestron C9.25 : 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. Delivered with: Starlight Micro Transmission for Celestron C9,25