ED APO FCD100 Triplet Series

Apochromatic (ED APO) lenses are designed to bring all the colors into focus in the same plane where as Achromatic lenses are corrected to bring two wavelengths into focus in the same plane. 

FCD-100 is manufactured by Hoya in Japan. This glass is used in the FCD-100 ED Apochromatic high-performance astrograph refractors designed to take your astrophotography to the next level.

Chromatic aberration is the phenomenon of different colors focusing at different distances from a lens. Telescope objective lenses for wide-band digital imaging in astronomy must have apochromatic correction, as the optical sensitivity of typical CCD imaging arrays can extend from the ultraviolet through the visible spectrum and into the near infrared wavelength range. Apochromatic designs require optical glasses with special dispersive properties to achieve three color crossings. Explore Scientific achieves this using costly ED (Extra-Low Dispersion) glass.

 

  • Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope - FCD100-0806-01
    Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope - FCD100-0806-01
    $ 1,199.99

    Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope - FCD100-0806-01

    Explore Scientific

    Description Temporarily Out of Stock, But More are On The Way! The Explore Scientific ED80 FCD100 Series is Available for Back-Order Purchase or L...

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    $ 1,199.99
  • Explore Scientific ED102-FCD100 Series Air-Spaced Triplet Refractor Telescope - FCD100-10207-01
    Explore Scientific ED102-FCD100 Series Air-Spaced Triplet Refractor Telescope - FCD100-10207-01
    $ 1,899.99

    Explore Scientific ED102-FCD100 Series Air-Spaced Triplet Refractor Telescope - FCD100-10207-01

    Explore Scientific

    Description Reveal celestial wonders like the desolate beauty of the lunar terrain, the serene structure of Saturn’s rings or the brightest deep s...

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    $ 1,899.99
  • Explore Scientific ED102-FCD100 Series Air-Spaced Triplet Telescope in Carbon Fiber - FCD100–10207-CF
    Explore Scientific ED102-FCD100 Series Air-Spaced Triplet Telescope in Carbon Fiber - FCD100–10207-CF
    $ 2,199.99

    Explore Scientific ED102-FCD100 Series Air-Spaced Triplet Telescope in Carbon Fiber - FCD100–10207-CF

    Explore Scientific

    Description The Explore Scientific ED102-FCD100 Series Air-Spaced Triplet Telescope in Carbon Fiber, has the advantages for astrophotographers and...

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    $ 2,199.99
  • FCD100 Series 127mm f/7.5 Aluminum Air-Spaced Triplet ED APO Refractor Telescope with 2.5" HEX Focuser
    FCD100 Series 127mm f/7.5 Aluminum Air-Spaced Triplet ED APO Refractor Telescope with 2.5" HEX Focuser
    $ 2,399.99

    FCD100 Series 127mm f/7.5 Aluminum Air-Spaced Triplet ED APO Refractor Telescope with 2.5" HEX Focuser

    Explore Scientific

    Description Reveal celestial wonders like the desolate beauty of the lunar terrain, the serene structure of Saturn’s rings or the brightest deep s...

    View full details
    $ 2,399.99
  • Explore Scientific FCD100 Series 127mm f/7.5 Carbon Fiber Triplet ED APO Refractor Telescope with 2.5" HEX Focuser
    Explore Scientific FCD100 Series 127mm f/7.5 Carbon Fiber Triplet ED APO Refractor Telescope with 2.5" HEX Focuser
    Sold out
    $ 2,999.99

    Explore Scientific FCD100 Series 127mm f/7.5 Carbon Fiber Triplet ED APO Refractor Telescope with 2.5" HEX Focuser

    Explore Scientific

    Description Reveal celestial wonders like the desolate beauty of the lunar terrain, the serene structure of Saturn’s rings or the brightest deep s...

    View full details
    $ 2,999.99
    Sold out
  • ED115 FPL53 115mm f/5.5 Air-Spaced Triplet ED APO Refractor Telescope in Carbon Fiber with 3" HEX Focuser
    ED115 FPL53 115mm f/5.5 Air-Spaced Triplet ED APO Refractor Telescope in Carbon Fiber with 3" HEX Focuser
    Sold out
    $ 3,499.99

    ED115 FPL53 115mm f/5.5 Air-Spaced Triplet ED APO Refractor Telescope in Carbon Fiber with 3" HEX Focuser

    Explore Scientific

    Description Reveal celestial wonders like the desolate beauty of the lunar terrain, the serene structure of Saturn’s rings or the brightest deep s...

    View full details
    $ 3,499.99
    Sold out
  • ED140 FPL53 140mm f/6.5 Air-Spaced Triplet ED APO Refractor Telescope in Carbon Fiber with 3" HEX Focuser
    ED140 FPL53 140mm f/6.5 Air-Spaced Triplet ED APO Refractor Telescope in Carbon Fiber with 3" HEX Focuser
    Sold out
    $ 5,999.99

    ED140 FPL53 140mm f/6.5 Air-Spaced Triplet ED APO Refractor Telescope in Carbon Fiber with 3" HEX Focuser

    Explore Scientific

    Description Reveal celestial wonders like the desolate beauty of the lunar terrain, the serene structure of Saturn’s rings or the brightest deep s...

    View full details
    $ 5,999.99
    Sold out
  • Explore Scientific ED165-FPL53 Air-Spaced Triplet Refractor Telescope - FPL53–165CF-01
    Explore Scientific ED165-FPL53 Air-Spaced Triplet Refractor Telescope - FPL53–165CF-01
    $ 11,999.99

    Explore Scientific ED165-FPL53 Air-Spaced Triplet Refractor Telescope - FPL53–165CF-01

    Explore Scientific

    Description Explore Scientific's largest refractor telescope incorporates our true three-element apochromat design the ED165-FPL53 with an apertur...

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    $ 11,999.99