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Orion Telescopes
Orion EON 80mm ED Doublet Apochromatic Refractor Telescope
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  • A beautifully crafted f/7 apochromatic refractor available at a very affordable price
  • Dual speed 2" slip-free Rack and Pinion focuser with a 10:1 focus reduction yields precise and repeatable results for both visual and astrophotography pursuits
  • 80mm doublet lens system includes one element of Fk61 ED (extra-low dispersion) glass, virtually eliminating false color
  • Includes strong and stylish felt-lined tube rings with large clamping thumb knobs, along with a 136mm long Vixen style dovetail rail
  • Extendable dew shield can be retracted in for compact storage and transport, and when extended for normal use can be locked in place if needed for slip-free stability.

Learn more
Item #  10287b

Have you been interested in owning a high quality apochromatic ED scope, but haven't pulled the trigger yet due to the high price of this style telescope? The Orion EON 80 ED Apochromatic Refractor might just be the ticket! It possesses amazing optics and high quality modern machining and features, all for a very affordable price.

This beautiful refractor builds on the success of our ED80 doublet, which has been an award winning workhorse in our lineup for the past two decades. But that 5-star refractor was frankly beginning to show its age when compared with modern refractors that include more accoutrements and features. This new doublet refractor delivers on that promise of an affordable Apo with all the modern features you might want.

First is a dual-speed 2" Rack and Pinion focuser, with a bias cut on the rack for backlash free operation. And when compared with a Crayford focuser, this high quality R&P eliminates any possibility of slippage when attaching camera gear. Perfect for precise and repeatable focusing for both visual and photographic pursuits. Also includes a 2"-1.25" step down adapter, as well as a finder scope dovetail shoe with dual lock knobs.

Next is the inclusion of beautiful felt-lined tube rings and a 136mm long Vixen dovetail rail. Threaded holes on top allow the addition of accessories such as guide scopes and rails. On the bottom you'll find a slot in the Vixen rail to adjust the tube ring spacing, along with a "-20 threaded socket which also allows attachment to standard photo tripods.

But let's also talk about the optics of this beautiful refracting telescope. This 80mm f/7 doublet (560mm focal length) is made apochromatic by the inclusion of an Fk-61 ED (extra-low dispersion) lens element which virtually eliminates false color, even on bright stars and planets. This lens minimizes the chromatic aberrations present on achromatic refractors, providing tack sharp and high contrast images and photographs of the night sky.

Measuring in at 17.25" long when the dew shield is retracted, this little telescope is extremely portable yet still packs a really big performance punch. We are very proud to now offer this high quality doublet with all the modern features for your astronomical pursuits!


Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-447-1001.


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
  • Optical design
  • Optical diameter
  • Focal length
  • Focal ratio
  • Coatings
    Fully multi-coated
  • Optics type
    Air-spaced doublet
  • Glass material
  • Resolving power
  • Lowest useful magnification
  • Highest useful magnification
  • Highest theoretical magnification
  • Limiting stellar magnitude
  • Front-end outside tube diameter
    4.00 in.
  • Optical quality
    Diffraction limited
  • Finder scope
  • Focuser
    2" dual-speed Rack-and-pinion
  • Mount type
    Optical Tube without Mount
  • Astro-imaging capability
    Lunar, planetary & long exposure
  • Backfocus distance
  • Tube material
  • Length of optical tube
    17.3 in.
  • Weight, optical tube
    6.4 lbs.
  • Additional included accessories
    2" - 1.25" eyepiece adapter, Felt lined tube rings, Machined Vixen dovetail bar
  • Other features
    One ED element in apochromatic objective lens, 2" Rack and Pinion focuser, Dual Speed 10:1 reduction focusing
  • Warranty
    One year

EON 80mm ED Doublet optical tube assembly
Finder scope base (installed)
Narrow style dovetail mounting bar
Heavy-duty hinged tube rings (2x)
Dust caps

Orders received by 1pm Eastern Standard Time for in-stock items ship the same business day. Order received after noon 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: $0.00
Standard Delivery to Canada: $25.00
3 Day Delivery: $10.00
2 Day Delivery: $10.00
Next Day Delivery: $15.00

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