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 34 of 51 
Orion Telescopes

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Expert
Celestron EdgeHD 925 Schmidt-Cassegrain Optical Tube
$2,299.00
 
Accepted Payment
Standard Per-Item Shipping Charge: $40.00
More Shipping Information
Expected Ship Date: 11/27/2014

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


Learn more
Item #  09554
Mfg Model #  91040-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.

  • Best for viewing
    Fainter deep sky
  • Best for imaging
    Deep sky
  • User level
    Expert
  • Optical design
    Aplanatic Schmidt
  • Optical diameter
    235mm
  • Finder scope lens diameter
    50mm
  • Focal length
    2350mm
  • Focal ratio
    f/10.0
  • Optics type
    Spherical
  • Eyepieces
    Celestron Axiom 23.0mm (2")
  • Magnification with included eyepieces
    102x
  • Resolving power
    0.49arc*sec
  • Lowest useful magnification
    34x
  • Highest useful magnification
    300x
  • Highest theoretical magnification
    555x
  • Limiting stellar magnitude
    14.4
  • Optical quality
    Diffraction limited
  • Finder scope
    9x50
  • Focuser
    Internal
  • Diagonal degrees
    2" 90° Mirror Star
  • Secondary mirror obstruction
    85mm
  • Secondary mirror obstruction by diameter
    36%
  • Secondary mirror obstruction by area
    13%
  • Mount type
    Optical Tube without Mount
  • Astro-imaging capability
    Lunar, planetary & long exposure
  • Tube material
    Aluminum
  • Length of optical tube
    22.0 in.
  • Weight, optical tube
    21.0 lbs.
  • Additional included accessories
    CGE style dovetail bar, 1.25" eyepiece adapter
  • Other features
    Mirror clutches, Tube vents, Fastar compatible
  • Warranty
    Two year
Edge HD 925 OTA
23mm 2" eyepiece
2" Star Diagonal
9 x 50 finderscope

Orders received by 1pm Eastern Time for in-stock items ship the same business day. Orders received after 1pm will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.

A per-item shipping charge (in addition to the standard shipping and handling charge) applies to this product due to its size and weight. This charge varies based on the shipping method.

Standard Delivery: $40.00
3 Day Delivery: $89.00
2 Day Delivery: $89.00
Next Day Delivery: $100.00

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