Orion EON 110mm f/6 APO Doublet Refracting OTA Telescope

Brand: Orion

SKU : OR-10031

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  • 110mm (4.3") f/6 air-spaced doublet with FPL-51 ED glass
  • 2.7" dual-speed 11:1 focuser supports up to 17lbs of accessories
  • Twist-tight 2" and 1.25" collars and dovetail finderscope base
  • Tube rings, retractable dew shield, and aluminum hard case included

Product Details

  • The EON 110mm refractor excels in both deep-sky imaging and wide-field observing. The 110mm aperture, combined with extra-low dispersion (ED) FPL-51 glass offers great color correction, as well as crisp images and fantastic views.


    The refractor's optics are fully multi-coated for maximum light throughput so you'll get the most out of each and every photon collected by the telescope. Three optimally placed knife-edge baffles inside the optical tube ensure rich contrast by eliminating off-axis reflections and glare that can be detrimental to both visual and astrophotographic pursuits. The 2.7" hybrid-drive rack-and-pinion focuser outperforms most Crayfords. The focuser's integral 8-ball-bearing system, helical gear drive, and dual-speed (11:1) motion control gives both silky smoothness and unflinching rigidity. The focuser features a patented focus lock mechanism that locks the drawtube in two directions, providing a much more rigid lock than most focusers. In fact the focuser is solid enough to easily support astrophotography equipment trains weighing up to a whopping 17 lbs. — without slipping!


    The EON 110mm ED's focuser can be rotated in two places, allowing camera framing to be set independently from your preferred positioning of the apochromatic refractor telescope's focus knobs. The rugged focuser's drawtube sports an engraved millimeter scale to aid in focus point repeatability - a great time-saver during astrophotography sessions. For wide-field visual use during the day or night, 1.25" and 2" diagonals and eyepieces can be used with the EON 110mm ED refractor. An optional Orion Field Flattener for Short Refractors (sold separately) is available and recommended for astrophotographic use.

  • specifications

    Aperture110 mm (4.25")
    Camera/Eyepiece Connection2" Nosepiece
    Dawes Limit1.05 arcseconds
    Focal Length660 mm
    Focal Ratiof/6
    Highest Magnification220x
    Light Gathering Power247x
    Limiting Magnitude14
    Optical DesignTriplet Refractor
    Tube Diameter135.2mm
    Tube Length546mm
    Tube Weight11.5 lbs
  • included items

    • 110mm (4.3") f/6 air-spaced doublet optical tube with FPL-51 ED glass
    • 1.25" twist-tight adapter
    • Tube rings
    • Hard carry case

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