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Orion Telescopes
Advanced
Orion EON 115mm ED Triplet Apochromatic Refractor Telescope
$1,799.99
3 easy payments of $600.00
With payment plan
 
Accepted Payment
Expected Ship Date: 09/25/2017

  • A beautifully constructed, 115mm (4.5") aperture triplet ED apochromat ideal for both astrophotography and serious visual observations
  • Fully multi-coated, three-lens ED optics and versatile f/7.0 focal ratio yields high-contrast images with excellent color correction and sharpness
  • Rock-solid, rotatable 3" dual-speed (11:1) Crayford focuser provides precise focus control and stable support of imaging accessories
  • Includes two split-clamp tube rings, narrow dovetail bar, thread-on metal objective cap, and a hard case with a custom die-cut foam insert for protection during transport and storage
  • Relatively lightweight 15.2 lb. optical tube can be stably supported by medium-size equatorial mounts


Learn more
Item #  10087

With exceptional optics, top-notch features and beautiful fit and finish, the Orion EON 115mm ED Triplet refractor telescope offers wide-field observers and astrophotographers an impeccably crafted, true-color instrument at a great price.

This premium refractor telescope's generous, 115mm (4.5") aperture collects ample light from faint deep-sky objects to provide crisp images with excellent color correction by virtue of the element of FK-61 extra-low dispersion ("ED") optical glass in its air-spaced triplet objective lens. The apochromatic refractor's medium 805mm focal length gives it a fairly fast, f/7.0 f-ratio which performs exceptionally well for wide-field visual use or deep-sky astrophotography. Multilayer anti-reflection coatings on every air-to-glass lens surface maximizes light transmission; while an extendable dew shield, blackened lens edges, and multiple internal knife-edge baffles eliminate off-axis reflections and glare to ensure excellent contrast.

A massive, 3" dual-speed (11:1) Crayford focuser provides precise, backlash-free focus control and easily supports heavy astrophotography gear. The rugged focuser's drawtube sports an engraved millimeter scale and focus-lock thumbscrew to aid in focus point repeatability - a great time-saver. The EON 115mm ED's focuser can be rotated in two places, allowing camera framing to be set independently from your preferred positioning of the telescope focus knobs. Non-marring brass compression rings in the 2" focuser drawtube and included step-down 1.25" adapter keep installed cameras, diagonals and other accessories free of scratches and thumbscrew gouges. 

Not only is the EON 115mm ED Refractor a great wide-field performer, it's also conveniently compact and measures just 27.75" with its sliding dew shield retracted for easy transport and storage in the included 30.5" long foam-lined hard carry case. Unlike heavier, bulkier astrophotography telescopes, the relatively lightweight, 15.2 lb. EON 115mm optical tube needs only a medium-sized equatorial mount to support it.

The EON 115mm refractor telescope features a dovetail finder scope base for use of optional aiming devices or Mini Guide Scopes. A thread-on metal objective lens cap, a narrow "Vixen-style" dovetail mounting bar and two heavy-duty hinged tube rings with multiple, pre-drilled and tapped M6 holes along the top and bottom are included.

If you're looking for an exquisitely constructed "apo" refractor that can achieve amazing results for both astrophotography and serious visual observing, the versatile Orion EON 115mm ED Triplet is an ideal choice.

Warranty

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 800-676-1343.

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
    Lunar & bright deep sky
  • Best for imaging
    Solar, lunar, planetary & Messier objects
  • User level
    Advanced
  • Optical design
    Refractor
  • Optical diameter
    115mm
  • Focal length
    805mm
  • Focal ratio
    f/7.0
  • Coatings
    Fully multi-coated
  • Optics type
    Air-spaced triplet
  • Glass material
    Extra low dispersion
  • Eyepieces
    None
  • Resolving power
    1.01arc*sec
  • Lowest useful magnification
    16x
  • Highest useful magnification
    136x
  • Highest theoretical magnification
    230x
  • Limiting stellar magnitude
    13.0
  • Optical quality
    Diffraction limited
  • Finder scope
    None
  • Focuser
    3" dual-speed rotatable Crayford
  • Mount type
    Optical Tube without Mount
  • Astro-imaging capability
    Lunar, planetary & long exposure
  • Tube material
    Aluminum
  • Length of optical tube
    34.7 in.
  • Weight, optical tube
    15.2 lbs.
  • Additional included accessories
    Hard case, Tube rings, Vixen dovetail mounting bar, 1.25" Adapter with compression ring
  • Other features
    Retractable Dew Shield, Dovetail Base for Finder Scope
  • Warranty
    One year

Orion EON 115mm ED f/7 triplet refractor optical tube assembly with 3" dual-speed Crayford focuser 
Two hinged tube rings
Narrow "Vixen-style" dovetail mounting bar, 9.7" length
Hard carrying case with die-cut foam interior
Starry Night SE astronomy software digital download insert
 

Orders received by 1pm Eastern Standard Time for in-stock item 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: $45.00
3 Day Delivery: $71.00
2 Day Delivery: $71.00
Next Day Delivery: $83.00

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