Celestron 91027XLT Schmidt-Cassegrain C9.25"- A XLT (CGE) Optical Tube Assembly 25mm 1.25" Eyepiece - 6x30mm Finderscope - 1.25" Star Diagonal and Visual Back - Dovetail Slide Bar - 2-Year Warranty Celestron C9-1/4-A Optical Tube Assembly 9 1/4&quot; with Starbright XLT Coating with Dovetail slide bar to fit CGE Mount