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Explore Scientific ED127-FCD100 Air-Spaced Triplet Refractor Telescope

SKU FCD100-127075-02
Save 20% Save 20%
Original price $2,499.99
Original price $2,499.99 - Original price $2,499.99
Original price $2,499.99
Current price $1,999.99
$1,999.99 - $1,999.99
Current price $1,999.99
In stock

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Explore Scientific ED127mm f/7.5 Air-Spaced APO Triplet Refractor - FCD100-127075-02

Presenting the Explore Scientific FCD100 Series 127mm f/7.5 Aluminum Air-Spaced Triplet ED APO Refractor Telescope.

Unlock the celestial marvels, from the stark lunar landscapes to the tranquil elegance of Saturn's rings, and the dazzling jewels of the Messier catalog, using this 127mm True Apochromatic Refractor from Explore Scientific's esteemed FCD100 Series.

Boasting genuine HOYA FCD100 extra-low dispersion (ED) glass and proprietary EMD enhanced multi-layer coatings on all optical surfaces, this telescope delivers true diffraction-limited optics.

It stands as a top-tier grab-and-go instrument, ready for impromptu stargazing sessions.

Employing an air-spaced triplet optical design that effectively eradicates chromatic aberrations, this telescope produces vivid, high-contrast imagery.

Image No.1 Taken Using Explore Scientific FCD100 Series 127mm f/7.5 Aluminum Air-Spaced Triplet ED APO Refractor Telescope

Its remarkable features include a 2.5" Hexagonal focuser with a robust design, capable of accommodating up to 10 lbs. of equipment.

The ED127 Classic White f/7.5 Air Spaced Triplet, equipped with Hoya FCD100 optics and an Integrated Dew Shield, offers a focal length of 952mm.

Additionally, it includes a 2.5" HEX Focuser with two extension tubes, a Cradle Ring with Handle, and a Vixen-Style Dovetail Plate.

Image No.2 Taken Using Explore Scientific FCD100 Series 127mm f/7.5 Aluminum Air-Spaced Triplet ED APO Refractor Telescope

The Explore Scientific 2N1 Finder Scope Base is pre-installed on the scope, along with a 99% Reflective 2" Diagonal.

This telescope weighs 18lbs. (Please note that the case and Finder Scope are NOT included.



  • 127mm Objective Lens: Is crafted to exacting standards, providing exceptional light-gathering ability. This allows for crisp and detailed observations of a wide range of celestial objects, from planets to deep-sky phenomena.
  • 952mm Focal Length: Featuring a significant focal length, this telescope offers a versatile magnification range, making it ideal for wide-field deep-sky observations and high-magnification studies of celestial objects alike.
  • 250x Highest Useful Magnification: This telescope offers an impressive maximum useful magnification of 250x, allowing you to explore intricate lunar surface features such as craters and mountain ranges, as well as observe planetary characteristics like Jupiter's cloud bands or Saturn's majestic rings in remarkable detail.
  • True Apochromatic Refractor: This telescope employs specially designed lens elements to correct for chromatic aberrations. This ensures that colors are faithfully reproduced in images, allowing for accurate representations of celestial objects.
  • Diffraction-Limited Optics: The telescope's optics are engineered to be diffraction-limited, meaning they are finely tuned to maximize image sharpness and clarity. This ensures that even subtle details on celestial objects are clearly visible.
  • Air-Spaced Triplet Optical Design: A hallmark of high-quality refractor telescopes. By carefully spacing the lens elements, chromatic aberrations are effectively eliminated, resulting in sharp, high-contrast images.
  • HOYA FCD100 Extra-Low Dispersion (ED) Glass: The integration of genuine HOYA FCD100 ED glass enhances color accuracy and reduces color fringing. This premium glass material is known for its superior optical properties, making it an excellent choice for discerning astronomers.
  • Enhanced Multi-Layer Coatings (EMD): The telescope's optical surfaces are treated with proprietary EMD coatings. These coatings serve to increase light transmission while minimizing undesirable reflections, contributing to improved image quality.
  • 2.5" Hexagonal Focuser: Provides a robust and stable platform for precise focusing. Its larger size allows for smooth adjustments, particularly beneficial when using heavy eyepieces or astrophotography equipment.
  • High Load Capacity: The focuser's sturdy construction enables it to support up to 10 lbs. of additional equipment. This versatility allows for the attachment of cameras, filters, and other accessories, expanding the telescope's capabilities.
  • Integrated Dew Shield: Acts as a barrier against dew formation on the lens, a common issue during cool evenings or in humid environments. This feature helps maintain clear views, even under challenging atmospheric conditions.
  • Cradle Ring with Handle and Vixen-Style Dovetail Plate: The cradle ring not only securely holds the telescope but also includes a convenient handle for easy transport. Additionally, the Vixen-style dovetail plate offers compatibility with a wide range of mounts for seamless integration.
  • Explore Scientific 2N1 Finder Scope Base: Provides a hassle-free attachment point for a finder scope. This aids in locating and centering celestial objects in the telescope's field of view.
  • 99% Reflective 2" Diagonal: The 99% reflective 2" diagonal mirror ensures efficient light reflection, optimizing the viewing experience. This diagonal is well-suited for use with 2" eyepieces, providing comfortable viewing angles.
  • Inclusive Accessories: The package features a 99% reflective 2" Diagonal, a Cradle Ring equipped with a handle and Vixen-Style Dovetail Plate, a 2.5" Hex Focuser with two Extension tubes, a Dew shield, an Explore Scientific 2N1 Finder Scope Base, ensuring a comprehensive observing experience, all backed by the assurance of a limited 1-year warranty.

                                                 Explore Scientific ED127-FCD100 Refractor Highlights Video:


                                                        Recommended accessories:

                                                        For continuous stargazing sessions without interruptions from dew, ensuring optical clarity, and safeguarding your valuable equipment, contemplate the optional AstroZap 5-inch Dew Heater Strap, meticulously designed for the ES127mm FCD100Air-Spaced Triplet Telescope.

                                                        AstroZap - Dew Heaters and Controllers

                                                        AstroZap's reliable dew-fighting solutions are tailored to enhance your telescope's performance and longevity, making them an ideal companion for your astronomical adventures.


                                                        What's Included:

                                                        ✓ Explore Scientific ED127-FCD100 Air-Spaced Triplet ED Refractor

                                                        ✓ 99% Reflective 2" Diagonal 

                                                        ✓ Cradle Ring with handle & Vixen-Style Dovetail Plate

                                                        ✓ 2.5" Hex Focuser w/ 2 Extension tubes

                                                        ✓ Dew shield

                                                        ✓ Explore Scientific 2N1 Finder Scope Base

                                                        ✓ Limited 1 year warranty


                                                        Item Number  FCD100–127075-02
                                                        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  18 lb.; 8.2 kg
                                                        Dovetail  Vixen

                                                        Customer Reviews

                                                        Based on 3 reviews
                                                        David C.
                                                        127mm refractor scope

                                                        I ordered a telescope and the next day I wanted to change to another scope. I called and they were so helpful, and change order with no problems. Prompt delivery and scope was in perfect condition. Will order from them again!

                                                        William Y.
                                                        ex sci 5 inch triplet apo.

                                                        scope was delivered very quickly by fed ex. Ups on the other hand delayed delivery of my mount. (from a different company. NOT RED CARPETS FAULT.
                                                        from what i saw of the moon through the scope, the image is sharp. love it.

                                                        5 Stars

                                                        I give this scope 5 stars. The optics are amazing, and it is a suitable instrument for me to set up on a whim if I get an itch to explore the cosmos (which often happens). If you’re just starting out, I’d recommend having at least 2 different Eyepieces on hand to get different magnifications and fields of view (ideally you also get a Barlow lens). If you plan on doing any astrophotography, get an EQ mount for this scope.