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Explore Scientific ED127 127mm f/7.5 Air-Spaced Triplet Apochromatic Refractor Telescope  ( TOP SELLER )
Explore Scientific ED127 127mm f/7.5 Air-Spaced Triplet Apochromatic Refractor Telescope

Explore Scientific ED127 127mm f/7.5 Air-Spaced Triplet Apochromatic Refractor Telescope ( TOP SELLER )

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Your Price: CAD2,459.00
Retail Price:CAD2,885.06

Your Savings:CAD426.06(15%)

Usually ships in 5-7 business days
Part Number:ES-ED127075-04

Choose Options or Accessories if Applicable

Focal Extenders
Field Flatteners / Coma Corrector
Finder Scopes & Accessories
Focuser and Accessories
Cradle Rings
Filters for Visual and Astrophotography
Simulate views with this scope and various eyepieces help

Key Features

  • 127mm Aperture
  • 952mm Focal Length, f/7.5 Focal Ratio
  • Extra-Low Dispersion (ED) Glass
  • Proprietary EMD Enhanced Multicoatings

The ED127 127mm f/7.5 Essential Apochromatic ED Triplet Refractor Telescope from Explore Scientific features a triplet apochromatic lens system with Extra-low Dispersion (ED) glass and Explore Scientific's proprietary anti-reflection EMD fully multicoated optics. This combination of glass, lenses, and coatings virtually eliminates chromatic and spherical aberrations for clear and bright images without distortion across the entire field of view, with true color rendition. This is a powerful optical tube assembly that can be used to see detailed views of celestial objects from the Moon to deep sky objects like nebulae and galaxies. It is also portable enough to be used as a grab-and-go option over larger and heavier scopes or set up on a dual-mount rig for astrophotography/astroimaging.

A mounting cradle-ring clamps over optical tube assembly (OTA). The cradle-ring allows the user to adjust the orientation and position of the scope relative to the mount to optimize viewing comfort and balance, while avoiding interference with other equipment. The scope is offered without a mount or tripod, but a Vixen-style dovetail plate makes it compatible with any alt-az or equatorial mount with a Vixen-style saddle. Its two-speed rack-and-pinion focuser helps make fine-focusing fast and precise. A 90° star diagonal is also included for more comfortable viewing. The mirror has dielectric coatings for a 99% light transmission for minimal light loss when using it.

Optical Performance
  • 127mm objective lens
  • 952mm focal length
  • Focal ratio: f/7.5
  • Refractor-style optical design
  • Extra-low Dispersion (ED) glass
  • Triplet apochromatic lenses eliminate chromatic and spherical aberrations for true color rendition and without distortion across the entire field of view
  • Proprietary anti-reflection EMD enhanced multicoatings on all optics
Use and Handling
  • Two-speed 2" rack-and-pinion focuser
  • Bracket for user-supplied finderscope
  • One-piece 2" 90° star diagonal with highly-reflective dielectric coatings for up to 99% light transmission
  • 1.25" eyepiece adapter
  • Vixen-style dovetail plate included
  • User-supplied mount and tripod required
  • Compatible with any alt-az or equatorial mount with a Vixen-style saddle
  • Cradle-ring assembly for plate allows the scope orientation to be changed based on mount configuration
  • Integrated carry handle on cradle-ring assembly
Optical Design Refractor
Aperture 5.0" (127 mm)
Focal Length 952 mm
Focal Ratio f/7.5
Eyepiece Barrel Diameter 2", 1.25" with included adapter
Diagonal 90°
Finderscope None
Tripod None
Mount Type Vixen-style dovetail
Optical Tube Dimensions Diameter: 5.1" (13.0 cm)
Length: 41.8" (1060 cm), with dew shield
Length: 33.3" (849 cm), without dew shield
Weight 22 lb (10 kg)

In the Box
Explore Scientific 127mm f/7.5 Essential Apochromatic ED Triplet Refractor Telescope (OTA only)
  • 2" ES Star Diagonal
  • 1.25" Eyepiece Adapter
  • Limited 1-Year USA/Canada Warranty, Extendable to Transferrable Lifetime Warranty with Registration

  • Reviews:
    The Orion Nebula: Explore Where Stars Are Born

    “The great glowing irregular cloud, shining by the gleaming light of the diamond-like stars entangled in it, makes a marvelous spectacle which is unequalled anywhere else in the sky.”
    —   Astronomer Robert Burnham, Jr.

    (From Burnham’s Celestial Handbook Volume Two)

    In the midst of the sword that branches off of Orion’s famous belt, a tumultuous saga of star formation is unfolding.

    Lit by the glow of the newborn stars nestled in its wispy embrace, the Orion Nebula is a stunning stellar nursery that has been studied, documented and revered for centuries.
    Unlike the vast majority of deep sky objects, this brilliant celestial beauty is both bright enough and close enough to be seen with the naked eye — although it will only appear as a slightly foggy star. To truly explore some of the more awe-inspiring features that have made it a legend, you will need a telescope.
    By offering 5 inches of unobstructed viewing, the Explore Scientific ED APO 127mm Triplet can significantly close the more than 1,300-light year gap between ourselves and this magnificent showpiece. This scope’s rich, high contrast views of the Orion Nebula will show that it is so much more than a foggy star. It is a glowing cocoon teeming with billowing gas and dust where stars and even planetary systems are being born.

    So, what can you discover about the Orion Nebula at the eyepiece of the ED127?

    One of the first features to explore is the tightknit open star cluster known as the Trapezium. Although it appears as one brilliant mass to the unaided eye, this close community of stars has several distinguishable members that pop to life in the ED127. At the core of the Trapezium lies a quartet of star systems that form the cluster’s signature trapezoidal asterism. The largest and most luminous of these is Theta-1 Orionis C. This huge binary powerhouse shines as brightly as 210,000 Suns and is largely responsible for the beautiful glow at the heart of Orion’s Nebula.

    In addition to providing illumination, Theta-1 Orionis C and its close companions are producing intense stellar winds that have a profound impact on the nebula. These fast-moving streams of protons, electrons and other particles pierce the surrounding veil of dust and gas and manipulate it into flowing ridgelines and revealing voids. The ED127 will show a few of the most prominent of these sculpted features, which hint at the nebula’s turbulent nature.

    The Orion Nebula is a truly spectacular celestial beauty filled with inspiring sights. As you explore its curving lines, gossamer webs and brilliant stellar inhabitants, you can envision the chaos of creation that is happening within. This is where stars are blazing to life. This is where the seeds of future solar systems are manifesting in protoplanetary disks. This is where the action is happening, and the ED127 can put you right in the midst of it.

    The above image of Orion's Nebula was shot on Jan 31, 2016 by Steve Siedentop with his ED127 APO Triplet Carbon Fiber (exactly the same optics and mechanics but with a carbon fiber tube) and 2' Field Flattener. He used a Canon modified T2i using Backyard EOS, PHD. He shot 8 - 5 minute Light exposures at ISO400 and 15 - 5 minute Dark exposures at ISO400. The images were processed in PixInsight. 

    Steve says "I have to confess that I didn’t spend a ton of time acquiring data because I was just testing out the scope/reducer configuration for the first time and didn't know what to expect.  The fact that I was able to produce an image with this level of detail in just 40 minutes is of great merit to the ED127CF and .7 Reducer combination."


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