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Explore Scientific ED127mm f/7.5 Essential Series Air-Spaced Triplet Refractor Telescope

SKU ES-ED127075-04
Original price $0.00 - Original price $0.00
Original price $0.00
$1,999.99 - $1,999.99
Current price $1,999.99
In stock

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Explore Scientific ED127mm f/7.5 Essential Series Air-Spaced Triplet Refractor Telescope - ES-ED127075-04

Introducing the Explore Scientific ED127mm Essential Series Air-Spaced Triplet Refractor Telescope, a Classic Refinement for Astrophotographers:

  • Precision Front Cell: Equipped with a redesigned front cell featuring push-pull adjustments for precise tilt and centering, ensuring optimal collimation and pinpoint stars.
  • Upgraded Focuser: Enjoy the new 2-inch two-speed rack and pinion focuser with robust locks and rotation adjustment, providing stability for your imaging setup.
  • Enhanced Portability: A retractable dew shield adds convenience and portability to your stargazing adventures.

This telescope has a proven track record, catering to the needs of astrophotographers and meticulous visual astronomers.

It utilizes genuine HOYA FCD1 ED glass to unveil the wonders of the night sky in exquisite detail.

With true apochromatic performance, diffraction-limited optics, and ample aperture, this versatile model effortlessly showcases celestial TREASURES.


From the majestic edge-on Sombrero Galaxy to the captivating Pinwheel Galaxy and even the intricate Hadley Rille on the Moon, this telescope captures them all with precision.

Its air-spaced triplet optical design virtually eliminates chromatic aberrations, producing high-contrast, brilliant images.

This is achieved through the combination of authentic FCD1 HOYA extra-low dispersion (ED) glass and proprietary EMD enhanced multi-layer coatings on every optical surface.

The telescope's cradle rings are thoughtfully designed, featuring a built-in handle for secure grip.

The handle's top face is slotted to accommodate a 1/4x20 bolt for "piggyback" imaging with a DSLR. The bottom of the cradle ring includes a V-block (Vixen-style) plate for easy attachment to your equatorial mount.

Additionally, the Explore Scientific 2N1 Finder Scope Base is pre-installed (finder scope sold separately). Elevate your astrophotography and visual astronomy with this refined instrument.



  • 127mm Objective Lens: This telescope is equipped with a 127mm (5-inch) objective lens, which provides excellent light-gathering capabilities for clear and detailed observations.
  • 250x Highest Useful Magnification: With a maximum useful magnification of 250x, this telescope allows you to zoom in on celestial objects, revealing fine details on the moon, planets, and deep-sky targets.
  • 952mm Focal Length: The telescope has a focal length of 952mm, which is ideal for both visual observation and astrophotography. It provides a balance between magnification and field of view.
  • Air-Spaced Triplet Optical Design: The air-spaced triplet optical design virtually eliminates chromatic aberrations, ensuring that your observations are free from color fringing and delivering high-contrast, sharp images.
  • HOYA FCD1 ED Glass: The telescope uses genuine HOYA FCD1 ED glass, which offers excellent color correction and minimizes optical aberrations, resulting in true-to-life colors and clear views of celestial objects.
  • Multi-Coated Optics: The optical surfaces of the telescope are fully multi-coated with proprietary EMD enhanced multi-layer coatings. These coatings enhance contrast, reduce glare, and maximize light transmission, ensuring bright and vivid observations.
  • Precision Front Cell: The telescope features a precision front cell with push-pull adjustments for tilt and centering, allowing you to achieve the best collimation for pinpoint stars.
  • Two-Speed Rack and Pinion Focuser: The 2-inch two-speed rack and pinion focuser include heavy-duty locks and rotation adjustment, providing stability for your imaging system and precise focusing control.
  • Retractable Dew Shield: The telescope comes with a retractable dew shield, enhancing portability and protecting the objective lens from dew formation during extended observation sessions.
  • Cradle Rings with Handle: The cradle rings include a built-in handle for secure handling and easy transportation. The top face of the handle is slotted, allowing for "piggyback" imaging with a DSLR.
  • 2N1 Finder Scope Base: The telescope is equipped with the Explore Scientific 2N1 Finder Scope Base, providing flexibility for attaching a finder scope (finder scope sold separately).
  • Versatile Application: This telescope is suitable for both visual astronomy and astrophotography, making it an excellent choice for amateur astronomers looking for a versatile instrument.

                                                  What's Included:

                                                  ✓ Explore Scientific ED127mm f/7.5 Essential Series Air-Spaced Triplet Refractor

                                                  ✓ 2" Diagonal with Ext. tubes

                                                  ✓ Cradle Ring with handle

                                                  ✓ 2" Two-Speed rack and pinion focuser

                                                  ✓ Dew shield

                                                  ✓ Limited 1 year warranty


                                                  • 5-inch Optical Aperture
                                                  • Ultra Zoom Capability (250x)
                                                  • 3-foot Focal Reach
                                                  • Ultra-Fine Focusing Mechanism
                                                  • Collapsible Moisture Guard
                                                  • Three-Lens Optics Configuration
                                                  • High-Clarity Glass Elements
                                                  • Advanced Anti-Reflective Coatings
                                                  • Easy Mounting Rings
                                                  • Dual-Purpose Sighting Base



                                                  Item Number  ES-ED127075-04
                                                  Focal Length  952mm
                                                  Focal Ratio  f/7.5
                                                  Limiting Magnitude  13
                                                  Resolution  .9 arcsec
                                                  Tube Length w/ Dew Shield  41.75"; 1060mm
                                                  Tube Length w/out Dew Shield  33.25"; 849mm
                                                  Diameter  130mm
                                                  Weight  18lb; 8.16kg
                                                  Dovetail  Vixen

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