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Explore Scientific ED102-FCD100 Air-Spaced Triplet Refractor Telescope

SKU FCD100-10207-02
Original price $0.00 - Original price $0.00
Original price $0.00
$2,430.00 - $2,430.00
Current price $2,430.00
In stock

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Explore Scientific ED102mm f/7 Air-Spaced APO Triplet Refractor - FCD100-10207-02

Introducing the Explore Scientific presents the ED 102mm f/7 FCD100 Series Air-Spaced Triplet Refractor Telescope, a gateway to the wonders of the cosmos.

Delve into the hauntingly beautiful lunar landscape, behold the graceful elegance of Saturn's resplendent rings, or explore the brilliant gems of the Messier catalog with the exceptional 102mm FCD100 Apochromatic Refractor Telescope.

This telescope shares its lineage with the ES-ED10207-02 model but elevates your astronomical experience with superior optical precision.

We harness the power of Hoya FCD100 optics, which bear remarkable similarities to Ohara FPL-53 glass.

Through relentless technological innovation, we have achieved mass production of this premium optical glass, proudly standing at the pinnacle of the FCD family.

By combining it with high refractive index glass, we attain an unrivaled level of chromatic aberration correction.

Hoya FCD100 stands as a testament to Hoya's finest glass craftsmanship.

With its true diffraction-limited optical design and a compact size designed to inspire impromptu stargazing adventures, this telescope is the ideal companion for celestial exploration.

The air-spaced triplet optical configuration virtually eradicates chromatic aberrations, ensuring the creation of exquisite high-contrast images.

This feat is accomplished by the harmonious union of genuine HOYA FCD100 extra-low dispersion (ED) glass and our proprietary EMD enhanced multi-layer coatings meticulously applied to every optical surface.

This remarkable telescope boasts a 2.5" Hexagonal focuser renowned for its robust design and unwavering support, capable of accommodating up to 10 lbs of equipment.

While it shines brilliantly on its own, the 102mm telescope's compactness also allows it to be mounted on a larger telescope, offering versatility to your astrophotography endeavors by separating guiding and imaging functions.



  • 102mm Objective Lens: The telescope features a 102mm (4 inches) diameter objective lens, which determines its ability to gather light for clear and detailed observations. This substantial objective lens enhances the telescope's light-gathering capabilities, allowing for vivid and intricate celestial observations.
  • 200x Highest Useful Magnification: This telescope can enlarge celestial objects up to 200 times their normal size, enabling precise and close-up examination of planets, lunar characteristics, and various astronomical phenomena. With the highest useful magnification of 200x, this telescope provides the versatility needed for detailed observations of a wide range of celestial bodies.
  • 714mm Focal Length: This telescope offers powerful magnification for studying planets, the moon's surface, and deep-sky objects. It also enhances image quality for astrophotography when used with the appropriate gear. The 714mm focal length ensures that the telescope delivers high-magnification views, making it suitable for both visual observation and astrophotography.
  • Air-Spaced Triplet Design: This telescope uses an air-spaced triplet lens design, consisting of three lens elements, to minimize chromatic aberration and produce high-quality, color-corrected images. The air-spaced triplet design ensures that the telescope delivers sharp and true-color images, providing an exceptional viewing experience.
  • FCD100 Extra-Low Dispersion Glass: The telescope likely incorporates FCD100 (Ohara) extra-low dispersion glass elements to reduce chromatic aberration further and provide excellent color fidelity. The use of FCD100 glass contributes to the telescope's apochromatic performance, ensuring accurate color rendition in observed celestial objects.
  • Apochromatic Performance: The triplet lens design, coupled with the FCD100 glass, ensures apochromatic (APO) performance, which means it delivers sharp, true-color images with minimal color fringing. This apochromatic performance is crucial for achieving high-quality and accurate representations of celestial details.
  • Multi-Coated Optics: Explore Scientific telescopes typically come with multiple layers of anti-reflective coatings on the lenses to improve light transmission and enhance image contrast. The multi-coated optics enhance the overall optical performance, resulting in brighter and clearer views of celestial objects.
  • 2.5-Inch Dual-Speed Rack-and-Pinion Focuser: A 2.5-inch dual-speed focuser with a rack-and-pinion design allows for precise focusing and fine adjustments when observing celestial objects. The dual-speed focuser provides astronomers with the capability to achieve sharp focus and make precise adjustments, enhancing the overall observing experience.
  • Dew Shield: A retractable dew shield helps prevent moisture buildup on the objective lens during dewy conditions, maintaining image quality. The dew shield is a practical feature that ensures consistent image clarity, particularly during observation sessions in varying atmospheric conditions.
  • Aluminum Tube: The telescope is likely housed in a sturdy and lightweight aluminum tube, which provides durability and portability. The aluminum tube construction combines durability with lightweight characteristics, making the telescope easy to transport and set up for stargazing sessions.
  • Mounting Options: The telescope may be compatible with various mounting options, such as equatorial mounts or alt-azimuth mounts, depending on your preference and intended use. The versatility in mounting options ensures that astronomers can choose the setup that best suits their observational preferences and tracking requirements.
  • Comprehensive Accessories: The package includes a 99% reflective 2" Diagonal, a Cradle Ring with a handle and Vixen-Style Dovetail Plate, a 2.5" Hex Focuser with 2 Extension tubes, a Dew shield, an Explore Scientific 2N1 Finder Scope Base, and the peace of mind provided by a limited 1-year warranty.


 Explore Scientific ED102-FCD100 Refractor Highlights Video:


Recommended Accessories:

For continuous stargazing without disruptions caused by dew formation, safeguarding optical clarity and protecting your valuable equipment, explore the AstroZap 4-inch Dew Heater Strap—an ideal accessory designed specifically for the ED102mm FCD100 Air-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 ED102-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  FCD100–10207–02
      Focal Length  714mm
      Focal Ratio  f/7
      Magnitude  12.5
      Resolution  1.14 arcsec
      Tube Length w/ Dew Shield  30.5"; 774mm
      Tube Length w/out Dew Shield  23.75"; 603mm
      Diameter  119mm
      Weight  10.9 lb.; 4.94 kg
      Dovetail  45 mm Wide V-Block, Similar to Vixen Dovetail Style

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