Explore Scientific ED127 127mm f/7.5 Triplet APO Refractor Telescope

Pinpoint Stars. Zero Chromatic Aberration. Ultimate Clarity.

Tired of blurry stars and color fringing? The Explore Scientific ED127 is a triplet APO refractor designed for razor-sharp, true-color images. Say goodbye to chromatic aberration and experience a telescope built for both visual observation and astrophotography.

Features

• True Apochromatic Optics – 127mm air-spaced triplet lens with HOYA FCD1 ED glass eliminates chromatic aberration for pinpoint stars and accurate colors.
• Astrophotography-Ready Precision Focuser – 2" dual-speed rack-and-pinion focuser with heavy-duty locks ensures precise focus control without drift, even with heavy imaging setups.
• Collimation Control for Perfect Stars – Front lens cell features push-pull adjustments, allowing precise optical alignment for sharp star shapes and high-contrast imaging. This ensures top-tier performance in both visual observation and astrophotography, minimizing distortions over time.
• Retractable Dew Shield for Compact Storage – Improves portability by reducing the overall tube length, making travel and storage easier.
• Vixen-Style Dovetail & Finder Scope Base – Universally compatible mounting system for seamless integration with most equatorial mounts and accessories.
• Cradle Ring with Integrated Handle – Built-in handle for secure carrying, with a slotted top face allowing a 1/4x20 bolt attachment for a DSLR.
• Generous 127mm Aperture – Captures more light to reveal galaxies, nebulae, and planetary details with outstanding contrast and resolution.

The Explore Scientific ED127 is for you if…

• You’re an astrophotographer who demands precision. The dual-speed focuser with heavy-duty locks ensures stable focus for long-exposure imaging.
• You want true apochromatic optics. The air-spaced triplet design delivers pure, color-accurate images without false color fringing.
• You’re upgrading from a beginner telescope. If you've outgrown an achromat, SCT, or Newtonian, the ED127 provides professional-level optics with a noticeable performance jump.
• You need optical fine-tuning capabilities. The adjustable collimation system allows precise alignment for perfect star shapes and sharper contrast.
• You want power and portability. The retractable dew shield and manageable 18 lb weight make this scope easy to transport without sacrificing performance.

Precision That Transforms Your Stargazing & Imaging

For serious astronomy and astrophotography, optical performance makes all the difference. The Explore Scientific ED127 delivers true apochromatic clarity, ensuring pinpoint stars and distortion-free images. With its 127mm air-spaced triplet optics and HOYA FCD1 ED glass, every view is razor-sharp, whether you're capturing the Pinwheel Galaxy's delicate structure or resolving the bands of Jupiter.

For those upgrading from beginner telescopes, this is the next step in image quality and detail. Achromats and reflectors often introduce optical distortions, but the ED127’s precision triplet lens virtually eliminates chromatic aberration, providing a superior deep-sky and planetary viewing experience.

Astrophotographers need reliability—and this system delivers. The dual-speed rack-and-pinion focuser locks in place, preventing focus drift with heavy DSLR or CCD cameras. Whether capturing long-exposure nebulae or fine lunar details, this focuser ensures your image stays tack sharp.

Fine-tune your optical alignment for perfect performance. Unlike many refractors, the ED127 features an adjustable front lens cell, allowing push-pull collimation adjustments to maintain pinpoint star shapes and crisp contrast. This level of control is essential for serious astronomers and astrophotographers who demand maximum precision over time.

Expand your imaging possibilities. The integrated handle features a slotted top face that allows a 1/4x20 bolt attachment for a DSLR, enabling piggyback imaging of wide-field shots while your main telescope tracks deep-space objects. This setup is ideal for capturing time-lapse sky movements, Milky Way panoramas, or wide-field astrophotography alongside deep-sky imaging.

For those chasing dark skies, portability is essential. The retractable dew shield shortens the optical tube for easier transport, while the lightweight 18 lb design ensures you can take it anywhere without compromising performance.

If you're looking for an optical system that delivers professional-grade clarity, precision collimation, and astrophotography versatility, the Explore Scientific ED127 is built for you.

What’s Included in the Explore Scientific ED127 Package?

The Explore Scientific ED127 Triplet APO Refractor comes with a high-performance optical system designed for serious visual observation and astrophotography.

• Explore Scientific ED127 Triplet Refractor – A 127mm air-spaced triplet lens with HOYA FCD1 ED glass for true apochromatic optics and zero chromatic aberration.
• 2" Dual-Speed Rack-and-Pinion Focuser – 10:1 fine adjustment system for precise focusing and image stability, even with heavy cameras.
• Two Extension Tubes – Allows back focus adjustments, ensuring compatibility with various eyepieces and astrophotography setups.
• Cradle Ring with Handle & Vixen-Style Dovetail Plate – Secure mounting system with universal compatibility.
• Hybrid Finder Scope Base – Comes pre-installed with Explore Scientific’s 2N1 Finder Scope Base, allowing easy attachment of most finder scopes (finder sold separately).
• 99% Reflective 2" Diagonal – Maximizes brightness and contrast, delivering crisp, distortion-free views through the eyepiece.

Recommended Accessories

Take full advantage of the ED127’s astrophotography and observation capabilities with these recommended accessories:

• Explore Scientific 8x50 Illuminated Right Angle Polar Finder Scope – Ensures precise polar alignment for improved tracking and long-exposure astrophotography.
• Explore Scientific EXOS2-GT Equatorial Mount – A computerized GoTo mount with motorized tracking, ideal for accurate object tracking and astrophotography.
• Explore Scientific Soft-Sided Telescope Case – A durable, padded case for secure storage and easy transport, perfect for taking your telescope to dark-sky locations.
• Explore Scientific 3" Field Flattener and 0.7x Focal Reducer – Essential for astrophotographers, this corrects field curvature for sharp stars across the entire image and increases imaging speed for faster deep-sky captures.