Explore Scientific 127mm f/7.5 CF FCD100 Triplet Refractor Telescope

Brand: Explore Scientific

SKU : ES-FCD100-127075-CF-01

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  • 127mm Air Spaced Triplet APO
  • Carbon Fiber Body — Only 14 lbs.
  • Focal Ratio: f/7.5
  • Focal Length: 952 mm
  • Premium Hoya FCD100 Optics
  • Integrated Dew Shield
  • 2.5-inch HEX R&P 10:1 Focuser
  • 99% Reflectivity 2" Diagonal


Product Details

  • The Explore Scientific 127mm f/7.5 CF Triplet APO Refractor Telescope with Hoya FCD100 optics and Integrated Dew Shield is a fantastic telescope for both visual observation and astrophotography.

    Reveal celestial wonders like the desolate beauty of the lunar terrain, the serene structure of Saturn’s rings or the brightest deep sky treasures of the Messier catalog with Explore Scientific’s FCD100 Series 127mm f/7.5 Air-Spaced Triplet in lightweight Carbon Fiber!

    This telescope has all the great features of the original EDT-127075-CF but includes genuine HOYA's premium FCD100 ED glass which is nearly identical in characteristics as OHARA's FPL-53. Relying on technological innovation, they have successfully launched the mass production of high-performance optical glass at the apex of the FCD family. Combining it with optical glass of high refractive index allows us to achieve unprecedented advanced chromatic aberration correction. HOYA FCD100 is considered one of the premier ED glass types available.

    Having a true diffraction-limited optical design and sized to encourage spontaneous stargazing sessions, this high-quality telescope is a perfect grab-and-go instrument for exploring the skies. Featuring an air-spaced triplet optical design that virtually eliminates chromatic aberrations, this telescope generates brilliant high-contrast images by combining genuine HOYA FCD100 extra-low dispersion (ED) glass and proprietary EMD enhanced multi-layer coatings on all optical surfaces. In addition, this amazing scope also includes a new 2.5-inch Hexagonal focuser with very rigid design and strong support. Up to 10-pounds of gear can be loaded onto this focuser.

    This 127mm telescope is designed to work with Explore Scientific’s 3-inch Field Flattener/0.7x Focal Reducer, though an additional adapter found here is required to thread it directly into the 127mm's stock 2.5" HEX focuser. Once you integrate the 0.7x Focal Reducer, the telescope reduces down from a 952mm f/7.5 system to be 666mm at f/5.25, which is a very fast and well-corrected system for deep sky astrophotography. If you're looking for a flat field for imaging at the full 952mm focal length, the HoTech SCA Field Flattener is a great choice.


      Additional Specifications:
    • Limiting Magnification: 13
    • Resolution: 0.9 Arcsec
    • Tube Length: 33.25-inches (849 mm)
    • Tube Length with Dew Shield: 41.75-inches (1060 mm)
    • Tube Diameter: 5.7-inches (145mm)
    • Dew Shield Outer Diameter: 7-inches (177mm)
    • Dovetail Style: Vixen


  • specifications

    Aperture127 mm (5")
    Dawes Limit0.91 arcseconds
    Dew Shield IncludedYes
    Focal Length952 mm
    Focal Ratiof/7.5
    Glass TypeHoya FCD100
    Highest Magnification254x
    Light Gathering Power329x
    Limiting Magnitude14.3
    Optical DesignTriplet Refractor
    Tube Diameter130mm
    Tube DiameterWith Dew Shield/ 177.8 mm (7")
    Tube Length33.25" (849 mm)
    Tube LengthWith Dew Shield/ 41.75" (1060 mm)
    Weight14 lb (10 kg)
  • included items

    • Explore Scientific 127mm Carbon Fiber f/7.5 Air Spaced Triplet with Hoya FCD100 optics
    • Integrated Dew Shield
    • 2.5-inch HEXagonal Rack and Pinion 10:1 two-speed Focuser
    • Cradle Ring with Handle
    • Vixen Style Dovetail Plate
    • Explore Finder Scope Base installed on scope
    • 99-percent Reflective 2-inch Diagonal
    • Weighs 14 lbs.
    • (Case and Finder Scope NOT Included)

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