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Orion Telescopes

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Expert
Celestron EdgeHD 800 Schmidt-Cassegrain Optical Tube
$1,299.00
 
Accepted Payment
Standard Per-Item Shipping Charge: $20.00
More Shipping Information
Expected Ship Date: 11/06/2014

  • 8" aperture aplanatic Schmidt-Cassegrain telescope produces astrograph-quality flat focal plane
  • EdgeHD coma-free optics and a built-in field flattener ensures sharp focus all the way to the edge of the telescope's field of view
  • Flexible tension clutches hold the mirror in place and reduce image shift when rotating the tube around a mount
  • Cooling vents located on the rear cell allow hot air to be released from behind the primary mirror
  • All Celestron EdgeHD telescope optical tubes are Fastar compatible for imaging down to f/2 with optional accessories


Learn more
Item #  09553
Mfg Model #  91030-XLT

Celestron's innovative new EdgeHD telescopes are aplanatic Schmidt Cassegrain models 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 give an astrograph-quality flat focal plane all the way to the edge of the field of view.

Celestron EdgeHD optics produce a focal plane more than three-times flatter than a standard Schmidt Cassegrain telescope. This guarantees you visibly sharp stars across some of the largest CCD chips available today.

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. With Celestron's High Definition optics you will be able to capture the faintest of galaxies all the way to the corner of your full frame camera chip. Coupled with Celestron's XLT coating group on every surface, EdgeHD optics gives you maximum light throughput across the widest visual and photographic spectrum.

The EdgeHD tube has been redesigned with top-notch features to make sure you get the most from your optics each and every night. Mirror locks hold the mirror in place and reduce image shift when rotating the tube around the mount. Flexible rods allow the mirror to be held in place without putting any force or pressure on the mirror, keeping the image centered in the eyepiece (or chip). Cooling tube vents located on the rear cell allow hot air to be released from behind the primary mirror. Each vent has an integrated 60 micron mesh filter guaranteed to let warm air out without letting dust in.

Warranty

This product is serviced and supported by its manufacturer according to the terms and conditions included in the packaged product. Orion's limited warranty does not apply. Please contact the manufacturer directly for technical support.

Warning

Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.

Product Support
Visit our product support section for instruction manuals and more
  • Best for viewing
    Brighter deep sky
  • Best for imaging
    Deep sky
  • User level
    Expert
  • Optical design
    Aplanatic Schmidt
  • Optical diameter
    203mm
  • Finder scope lens diameter
    50mm
  • Focal length
    2032mm
  • Focal ratio
    f/10.0
  • Optics type
    Spherical
  • Eyepieces
    Plossl 40.0mm (1.25")
  • Magnification with included eyepieces
    51x
  • Resolving power
    0.57arc*sec
  • Lowest useful magnification
    29x
  • Highest useful magnification
    300x
  • Highest theoretical magnification
    480x
  • Limiting stellar magnitude
    14.0
  • Optical quality
    Diffraction limited
  • Finder scope
    9x50
  • Focuser
    Internal
  • Diagonal degrees
    1.25" 90° Mirror Star
  • Secondary mirror obstruction
    69mm
  • Secondary mirror obstruction by diameter
    34%
  • Secondary mirror obstruction by area
    11%
  • Mount type
    Optical Tube without Mount
  • Astro-imaging capability
    Lunar, planetary & long exposure
  • Tube material
    Aluminum
  • Length of optical tube
    17.0 in.
  • Weight, optical tube
    14.0 lbs.
  • Additional included accessories
    CGE style dovetail bar
  • Other features
    Mirror clutches, Tube vents, Fastar compatible
  • Warranty
    Two year
Celestron Edge HD 800 Optical Tube Assembly
40mm 1.25" telescope eyepiece
1.25" Star Diagonal
9 x 50 finderscope

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