The Celestron C6-A-XLT Schmidt-Cassegrain Optical Tube Assembly (OTA) with an aperture of 152 mm (6-inch) is available individually to be used with your favorite mount. All-optical surfaces are coated with StarBright XLT coatings. These tube assemblies are equipped with the same dovetail mounting bar as used on the CG-5 series for easy attachment to a variety of popular mounts.      Celestron guarantees uncompromising quality with a backed-up 2 Year warranty. Celestron warrants your telescope to be free from defects in materials and workmanship for two years. Celestron will repair or replace such product or part thereof, which upon inspection by Celestron, is found to be defective in materials or workmanship.          Celestron C6-A SCT Optical Tube Features        6-inch Schmidt-Cassegrain, 1500 mm focal length (f/10) Aluminum Optical Tube      Celestron premium StarBright XLT coatings      Included With The Celestron C6-A Optical Tube is a CG5 compatible dovetail bar for easy mounting      The Celestron C6-A optical tube comes with a Celestron star diagonal and a 6x30 finderscope      Celestron C6-A optical tube comes with a Celestron 2 year warranty         Celestron C6-A SCT Optical Tube Specifications        1500 mm focal length (f/10).      25 mm eyepiece included (60x).     Aluminum Optical Tube Assembly.     Celestron's premium StarBright XLT multi-coatings.      1.25-inch Star Diagonal provides more comfortable viewing position when observing objects that are high in the sky.     1.25-inch Visual Back allows using various 1.25-inch accessories.      6x30 finderscope to help accurately find objects.     Includes a dovetail rail compatible with CG-5 Advanced Series mount.     Optical tube weight: 10 lbs (4.54 kg)             Celestron Product Number:         91010-XLT              Please Note:    This optical tube assembly will fit on the Celestron CG-5 and Advanced VX mount as well as the Meade LXD55/75, the older style Losmandy GM-8, and some Vixens. It will not attach to mounts that accept a 3 Inch dovetail, such as the CGE, G-11, Paramount, or newer GM-8. If you are unsure, please give us a call before you buy.