Orion - EON 110mm ED f/6.0 Apochromatic Refractor Telescope - 10031

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  • The Orion EON 110 is a high quality refractor telescope with a 110mm (4.3") air-spaced doublet lens made with FPL-51 ED glass.

  • This fast, f/6 refractor is great wide-field astrophotographic or visual performance thanks to outstanding color correction.

  • Precision 2.7" dual-speed (11:1) hybrid-drive focuser supports heavy imaging systems weighing up to 17 lbs. without slipping.

  • Upgraded with twist-tight 2" and 1.25" collar adapters for easy accessory additions and changing, and installed dovetail finder scope base

  • Includes tube rings, retractable dew shield, and aluminum-clad hard case

  • 1 year warranty.

SKU: ORI-10031
Manufactured by:

Product Description

Orion EON 110mm ED f/6.0 Apochromatic Refractor Telescope

Orion has reintroduced on of their most popular optical tubes of all time, the EON Apochromatic refractor and has added upgraded features to make it an even better value than before. This 110mm aperture APO refractor provides crystal clear views with excellent color correction thanks to FPL-51 optical glass, making it an ideal choice for astrophotographers and observers alike.  Low dispersion ED glass is air-spaced in this doublet design and the 660mm focal length provides a fast f/6 focal ratio for superb wide field performance. Fully multi-coated optics are used for maximum light throughput and minimized glare.  Knife edge baffles further help eliminate spurious light and heightened contrast. 

The focuser included with the EON 110 ED has been upgraded to a provide slippage-free performance for loads up to 17 pounds to help accommodate even large imaging systems with ease.  This 2.7" precision focuser uses an 8 ball bearing system and helical gear drive with dual speed options (11:1).  Operation is ultra-smooth while remaining completely rigid for system stability.   A patented two way locking mechanism ensures that you will not have to continually refocus through the night.   The focuser also rotates in two directions allowing you to position your camera to your perferred place from the focus knobs and engraved millimeter markings make adjustments fast. The built in 2" and 1.25" twist tight brass compression ring collars allow for quick and easy attachment of accessories and eliminates the need for thumbscrews.  A dovetail finder base has also been pre-installed for your convenience.

The EON 110mm ED Refractor is a travel friendly telescope measuring just 22" long with the sliding dew shield retracted and weighs just 11.5 pounds.  This allows the scope to be paired with medium duty equatorial mounts as well so you can keep your system lightweight and easy to move.    This telescope kit includes two hinged tube rings that are drilled with 1/4"-20 holes along the top and bottom to allow for a simple dovetail attachment.  The included aluminum carrying case with die cut foam will keep your telescope safe and clean.  The hard case measures 28.25"x9.25"x9.75".

EON 110mm ED f/6.0 Apochromatic Refractor Telescope Features & Specs:


Name Orion - EON 110mm ED f/6.0 Apochromatic Refractor Telescope - 10031
Manufacturer Orion
Model ORI-10031
In The Box Orion EON 110mm f/6.0 optical tube assembly Aluminum Objective Cap 1.25" twist-tight adapter Tube Rings (pair) Hard Carrying Case 2.5mm hex key
Aperture 110mm
Finderscope None
Focal Length 660mm
Focal Ratio f/6.0
Focuser 2.7" Hybrid dual-speed Rack-and-pinion
Highest Useful Magnification 220x
Length 21.5 in.
Lens Coatings Fully multi-coated
Limiting Stellar Magnitude 12.9
Lowest Useful Magnification 16x
Material Aluminum
Optical Glass Extra low dispersion FPL-51
Optical Design Air-spaced doublet
Optical Tube Weight 11.5 lbs.
Resolving Power 1.05arc*sec
Warranty One year


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In the Box

Orion EON 110mm f/6.0 optical tube assembly
Aluminum Objective Cap
1.25" twist-tight adapter
Tube Rings (pair)
Hard Carrying Case
2.5mm hex key

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