The Explore Scientific ED127 Essential Series Air-Spaced Triplet Refractor is a precision-engineered telescope designed to meet the exacting standards of astrophotographers and serious visual astronomers alike. This 127mm f/7.5 apochromatic refractor combines high-end optical components with upgraded mechanical features that make it one of the most versatile and capable scopes in its class.
At the heart of the ED127 is a triplet objective lens constructed from HOYA FCD1 extra-low dispersion (ED) glass, which significantly reduces chromatic aberration and delivers crisp, true-color views. Whether you're observing the intricate surface of the Moon or imaging distant galaxies, the ED127 offers diffraction-limited performance with exceptional contrast and clarity.
The newly refined front lens cell now includes push-pull collimation adjustments—an essential tool for fine-tuning star shape and achieving pinpoint sharpness across the field, especially critical for long-exposure imaging. Paired with a robust 2" dual-speed rack-and-pinion focuser featuring rotation and locking capability, this scope ensures precise, stable focusing even when supporting heavy camera gear.
A retractable dew shield enhances portability, while the included cradle rings with integrated carry handle make transport and mounting easy. The bottom of the cradle features a Vixen-style dovetail plate for broad mount compatibility, and the handle is slotted to accept a ¼-20 bolt for piggyback DSLR imaging.
Whether you're planning to image distant galaxies, enjoy crisp views of planetary detail, or both, the ED127 is an outstanding platform that offers professional-grade results in a streamlined, travel-friendly package.
CA Residents: Prop 65 WARNING(S)
⭐ Features & Benefits
- 127mm Air-Spaced Triplet APO Refractor – Premium apochromatic optical design using HOYA FCD1 ED glass for high contrast and minimal chromatic aberration
- Diffraction-Limited Optics – Delivers pinpoint stars and razor-sharp detail for both imaging and visual astronomy
- Push-Pull Collimation Front Cell – Allows precision tilt adjustments for perfect star shapes and critical alignment tuning
- 2" Dual-Speed Rack-and-Pinion Focuser – Smooth, stable focus control with coarse and fine adjustment for demanding astrophotography
- Focuser Lock and Rotator – Securely lock focus and easily rotate your imaging train for the ideal framing
- EMD Enhanced Coatings – Fully multi-coated optics increase light transmission and reduce reflections for brighter, more contrast-rich images
- Retractable Dew Shield – Improves portability and protects the optics from dew and stray light
- Cradle Rings with Integrated Carry Handle – Handle doubles as a piggyback DSLR mount (¼-20 threaded slot) for wide-field astrophotography
- Vixen-Style Dovetail Bar – Broad compatibility with most equatorial mounts and tracking systems
- Pre-Installed 2N1 Finder Scope Base – Accepts Explore Scientific’s hybrid finder scopes (sold separately) for flexible aiming options
🌟 Who It’s For
- Astrophotographers seeking a high-performance refractor with collimation control and precise focus
- Advanced visual observers looking for crisp, color-accurate planetary and lunar detail
- Deep-sky enthusiasts who want to capture galaxies, nebulae, and clusters in true diffraction-limited clarity
- Traveling imagers needing a portable yet powerful setup with a retractable dew shield
- Anyone wanting premium ED optics and a solid mechanical build at a competitive price point
🎯 What You’ll Be Able to See
- Sharp, high-contrast lunar features like Hadley Rille, Tycho crater, and Montes Apenninus
- Vibrant deep-sky targets including the Sombrero Galaxy, Pinwheel Galaxy, and the Lagoon Nebula
- Pinpoint stars and accurate color rendering in double stars and open clusters
- Edge-to-edge detail in widefield shots thanks to the triplet apochromatic design
- Tight, focused stars for astrophotography with excellent control over chromatic aberration
🎒 What’s Included
- Explore Scientific ED127 Essential Series 127mm f/7.5 APO Refractor
- Air-spaced triplet lens assembly with HOYA FCD1 ED glass
- Precision front cell with tilt and collimation adjustment
- 2" Dual-speed rack-and-pinion focuser with rotation and locking
- Retractable dew shield
- Cradle rings with slotted carry handle (¼-20 piggyback ready)
- Vixen-style dovetail mounting plate
- Explore Scientific 2N1 Finder Scope Base (finder sold separately)
- Dust caps and mounting hardware
- Explore Scientific Limited Warranty
Specs
| Item Number | ES-ED127075-04 |
|---|---|
| Focal Length | 952 mm |
| Focal Ratio | f/7.5 |
| Limiting Magnitude | 13 |
| Resolution | 0.9 arcseconds |
| Tube Length (w/ Dew Shield) | 41.75 in (1060 mm) |
| Tube Length (w/o Dew Shield) | 33.25 in (849 mm) |
| Optical Tube Diameter | 130 mm |
| Weight | 18 lbs (8.16 kg) |
| Dovetail Plate | Vixen-style |
Warranty Information:
This product includes a Limited One-Year USA Warranty, which converts to the Explore STAR Transferable Extended Life of the Product Warranty when registered within 60 days of purchase.
To activate your warranty, register your product at:
www.explorescientific.com/pages/product-registration