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Celestron EdgeHD 1400 Telescope Optical Tube


SKU: 91060-XLT
Manufacturer: Celestron
UPC: 050234106092
Telescope Type: Aplanatic Schmidt-Cassegrain
Aperture (in.): 14 inches
Aperture (mm): 355.6 mm
Focal Ratio: f/11
Focal Length: 3910 mm
Limiting Visual Magnitude: 15.3
Eyepiece 1: 23 mm
Magnification with Eyepiece 1: 170x
Accepts 2-inch Eyepieces: Yes
Finder: 9 x 50 optical
Star Diagonal: 2-inch mirror with 1.25-inch adapter
Weight Fully Assembled: 46 lbs.


See and image the Universe in HD. This 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 

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.

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.

EdgeHD Whitepaper

The Celestron Product Development team has released a whitepaper outlining the technology behind EdgeHD. This paper describes the development goals, design decisions, optical performance, and their practical realization in 8-, 9.25-, 11-, and 14-inch apertures. We include cross-sections of the EdgeHD series, comparative spot diagrams for the EdgeHD and competing "coma-free" Schmidt-Cassegrain designs, a table with specifications for visual and imaging, graphics showing how to place sensors at the optimum back-focus distance, and details on the construction and testing of the EdgeHD telescope series.

Celestron EdgeHD Optics Whitepaper
Click here to download the whitepaper.

Mechanical Features

In addition to Celestrons 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):355.6 mm (14 in)
  • Focal Length:3910 mm (154 in)
  • Focal Ratio:11
  • Focal Length of Eyepiece 1 (mm):23 mm (0.91 in)
  • Magnification of Eyepiece 1:170 x
  • Finderscope:9x50
  • Star Diagonal:2" w/1.25" adapter
  • Optical Tube:Aluminum
  • Highest Useful Magnification:840 x
  • Lowest Useful Magnification:51 x
  • Limiting Stellar Magnitude:15.3
  • Resolution (Rayleigh):0.39 arc seconds
  • Resolution (Dawes):0.33 arc seconds
  • Light Gathering Power (Compared to human eye):2581 x
  • Secondary Mirror Obstruction:4.5 in (114 mm)
  • Secondary Mirror Obstruction by Diameter:32 %
  • Secondary Mirror Obstruction by Area:10 %
  • Optical Coatings:StarBright / XLT
  • Optical Tube Length:31 in (787 mm)
  • Optical Tube Weight:46 lbs (21 kg)
  • Dovetail Compatibility:CGE Mount

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