"Meade 10"" f/8 ACF Optical Tube Assembly #1008-80-01 with the Losmandy-style dovetail. The bare essentials for an unbeatable price. Building on Meade's award-winning Advanced Coma-Free (ACF) optics, the 10"" OTA employs a fast f/8 optical system with high-contrast baffling that insures crisp, pinpoint imaging to the very edge of the field. Features an internal zero image shift Crayford-style focusing system with a two-speed 7:1 reduction control that provides smooth, precise focusing at any magnification.Also features Meade's Ultra-High Transmission Coatings (UHTC) for maximum brightness and contrast, an oversized low-expansion primary mirror for extra aperture and to prevent thermal expansion of the mirror and diffraction-limited optics. Includes precision machined Losmandy-style dovetail rail mated to the tube with wide-stance radius blocks for rock-steady mounting and front and rear dust covers. Focal length is 2032mm. OTA weight is 33lbs.|10"" f/8 Advanced Coma Free Optics - 2032mm focal length|Meade Ultra-High Transmission Coatings (UHTC)|Oversized Low-Expansion Borosilicate Primary Mirror|Losmandy style mounting rail"