1. Last update on 08/20/2013.

    Celestron C11 Edge HD (CGE)

    Price:   5.595.50 CHF 5.890.00 CHF

    Celestron C11 Edge HD (CGE)


    Introducing Celestron's New Aplanatic Schmidt Telescope Design!

      Visibly Sharper Images
      Superior Performance
      Enhanced Mechanical Features
      Fastar® Compatible
    EdgeHDis an aplanatic Schmidt telescope designed to produce aberration-free images across a wide visual and photographic field of view. The optical system was designed to reduce more than just off-axis star coma, but also to give an astrograph quality flat focal plane all the way to the edge of the field of view.

    True Astrograph Quality
    Many optical designs that advertise themselves as "astrograph" quality actually only produce pinpoint stars across a curved focal plane. While this may be acceptable for visual observing, stars will appear out of focus at the edge when used with a flat chip sensor of a digital camera. EdgeHD optics produce a focal plane more than three-times flatter than a standard Schmidt Cassegrain telescope and dramatically flatter than other competing coma-free designs. This guarantees you visibly sharp stars across some of the largest CCD chips available today.

    EdgeHD Optics

    Improved Performance
    Superior edge performance not only creates rounder, more pleasing stars but actually improves the resolution and limiting magnitude when compared to telescopes of equal aperture. Starbright XLT® Coatings coupled with Celestron's StarBright XLT coating group on every surface, EdgeHD optics gives you maximum light throughput across the widest visual and photographic spectrum.

    Mechanical Features
    In addition to Celestron’s new optimized optical design, the EdgeHD tube has been redesigned to make sure you get the most from your optics each and every night.

    Mirror Clutches - Flexible tension clutches hold the mirror in place and reduce image shift when rotating the tube around the mount. The flexible rods allow the mirror to be held in place without putting any force or pressure on the mirror assembly, keeping the image centered in the eyepiece (or chip).

    Tube Vents - Cooling vents located on the rear cell allow hot air to be released from behind the primary mirror. Each vent has an integrated 60 micron micro-mesh filter guaranteed to let warm air out without letting dust in.

    Fastar Versatility - The EdgeHD is the most versatile imaging scope available today. At its native f/10 you can achieve the image scale necessary to capture the smallest of deep sky objects. With the optional reducer lens (coming soon) you can increase your field of view without sacrificing optical performance. A barlow gives you the added power for high resolution planetary, lunar and solar imaging. And of course all EdgeHD optical tubes are Fastar® compatible for ultra fast f/2 wide field imaging. Each tube has been fitted with a removable secondary mirror and are opto-mechanically aligned on a laser bench to ensure they are axially symmetric in any configuration.

    Optical Design EdgeHD
    Aperture (mm) 279.4 mm (11 in)
    Focal Length (mm) 2800 mm (110 in)
    Focal Ratio 10
    Eyepiece 1 (mm) 23 mm (0.91 in)
    Magnification 1 122 x
    Finderscope 9x50
    Star Diagonal 2" w/ 1.25" adapter
    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 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 28 lbs (13 kg)
    Dovetail Compatibility CGE Mount

    All Celestron Products will be deliverd 5-14 Days after payment.
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