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EdgeHD 800 / CGE
Item no. 91030 XLT
SRP: £1549.00
Warranty: 24 Months

SEE THE UNIVERSE IN HD!

Introducing Celestron's New Aplanatic Schmidt Telescope Design!

  • Visibly Sharper Images
  • Superior Performance
  • Enhanced Mechanical Features
  • Fastar® Compatible

EdgeHD is 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.

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.

Celestron Schmidt-Cassegrain Optical Tube Assemblies (OTA) are available individually for use with your favorite mount. Each OTA is made to the same exacting standards as those used on all our high quality telescopes. All optical surfaces are coated with Celestron’s high efficiency StarBright® multi-layered coating group. These tube assemblies are equipped with the same dovetail mounting bar used on the CGE and Advanced Series for easy attachment to a variety of popular mounts.

GENERAL FEATURES

  • Experience our best optical performance with EdgeHD’s aplanatic, flat field Schmidt-Cassegrain optics for pinpoint stars all the way to the edge of today’s largest imaging sensors and widest eyepieces.
  • Aluminum optical tube with tube vents featuring an integrated 95-micron mesh filter allows hot air to be released from behind the primary mirror. Mirror support knobs hold the mirror in place and reduce image shift during imaging.
  • Versatile design accommodates 3 focal ratios: native f/10, f/7 with the addition of a focal reducer, or ultra-fast f/2 imaging with a removable secondary mirror and third-party accessories.
  • Celestron’s premium StarBright XLT coatings provide maximum light transmission.
  • A 9x50 finderscope, 1.25” mirror diagonal for more comfortable viewing, and 40 mm Plössl 1.25” eyepiece are all included.

SPECIFICATIONS:

Optical Design: EdgeHD
Aperture (mm): 203.2 mm (8 in)
Focal Length: 2032 mm (80 in)
Focal Ratio: 10
Focal Length of Eyepiece 1 (mm): 40 mm (1.57 in)
Magnification of Eyepiece 1: 51 x
Finderscope: 9x50
Star Diagonal: 1.25
Optical Tube: Aluminum
Highest Useful Magnification: 480 x
Lowest Useful Magnification: 29 x
Limiting Stellar Magnitude: 14
Resolution (Rayleigh): 0.69 arc seconds
Resolution (Dawes): 0.57 arc seconds
Light Gathering Power (Compared to human eye): 843 x
Secondary Mirror Obstruction: 2.7 in (69 mm)
Secondary Mirror Obstruction by Diameter: 34%
Secondary Mirror Obstruction by Area: 11%
Optical Coatings: StarBright XLT
Optical Tube Length: 17 in (432 mm)
Optical Tube Weight: 14 lbs (6.35 kg)
Dovetail Compatibility: CGE Mount
 

 

To discover more and to find your local Celestron dealer please visit our Dealer Page

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