Celestron C11 SCT OTA - CG5 Celestron C11 SCT OTA - CG5

Celestron C11 SCT OTA - CG5 Brand NewIncludes Two Year Warranty The Celestron C11 SCT OTA - CG5 is a 11" Schmidt-Cassegrain Optical Tube Assembly that features premium StarBright XLT coatings. The optical tube assembly is a versatile instrument accommodates 2800 mm focal length (f/10) with the Star diagonal provides more comfortable viewing position when observing objects that are high in the sky. 9x50 finderscope to help accurately find objects and 40 mm eyepiece included (70x). C11-A XLT (CG-5) Optical Tube Assembly Features: 11" Optical Tube Assembly Premium StarBright XLT Coatings 660x Maximum Magnification Focal Length: 2800 mm, f/10 Focal Ratio 9x50 Finderscope Aluminum Optical Tube StarBright XLT Technology 40 mm Eyepiece Visual Back Allows for Use with 1.25" Accessories CG-5 Mount SKU: 91067-XLT Specifications: Optical Design : Schmidt-Cassegrain Aperture : 279.4 mm (11 in) Focal Length : 2800 mm (110 in) Focal Ratio : 10 Focal Length of Eyepiece 1 (mm) : 40 mm (1.57 in) Magnification of Eyepiece 1 : 70 x Finderscope : 9x50 Star Diagonal : 1.25" Optical Tube : Aluminum Highest Useful Magnification : 660 x Lowest Useful Magnification : 40 x Limiting Stellar Magnitude : 14.7 Resolution (Rayleigh) : 0.5 Arc Seconds Resolution (Dawes) : 0.42 Arc Seconds Light Gathering Power : 1593 x Secondary Mirror Obstruction : 3.75 in (95 mm) Secondary Mirror Obstruction by Diameter : 34% Secondary Mirror Obstruction by Area : 12% Optical Coatings : StarBright / XLT Optical Tube Length : 24 in (610 mm) Optical Tube Weight : 27.5 lbs (12 kg) Dovetail Compatibility : CG-5 Mount

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