Celestron C11-A XLT SCT Telescope OTA (CGE)


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SKU: 91036-XLT

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    Celestron C11-A XLT SCT Telescope OTA (CGE)

    Celestron provides their high grade Schmidt Cassegrain optics as a tube assembly only to use with your favourite mount. The popular C11 features premium StarBright XLT coatings, a 2800mm focal length (f/10), a 9×50 finderscope, and a dovetail rail compatible with CGE (wide 3″) dovetails.

    Celestron C11-A XLT Optical Tube Assembly

    Celestron provides their Schmidt Cassegrain optics as a tube assembly only to use with your favourite mount.

    • 11″ Schmidt-Cassegrain Optical Tube Assembly
    • Aluminum Optical Tube
    • Celestron’s premium StarBright XLT coatings
    • 2800 mm focal length (f/10)
    • 40 mm eyepiece included (70x)
    • Visual back allows for use with 1.25″ accessories
    • 9×50 finderscope to help accurately find objects
    • Star diagonal provides more comfortable viewing position when observing objects that are high in the sky
    • Includes dovetail rail compatible with CGE (wide 3″) dovetails

    Celestron C11-A XLT OTA Specifications

    Optical Design Schmidt-Cassegrain
    Aperture (mm) 279.4 mm (11 in)
    Focal Length 2800 mm (110 in)
    Focal Ratio 10
    Focal Length of Eyepiece 40 mm
    Magnification of Eyepiece 70 x
    Finderscope 9×50
    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 (Compared to human eye) 1593 x
    Secondary Mirror Obstruction 95 mm
    Secondary Mirror Obstruction by Diameter 34%
    Secondary Mirror Obstruction by Area 12%
    Optical Coatings StarBright / XLT
    Optical Tube Length 610 mm
    Optical Tube Weight 12 kg
    Dovetail Compatibility CGE Mount

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