ED APO FCD1 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-1 is manufactured by Hoya in Japan. This glass is used in the FCD-1 ED Essential and Carbon Fiber Series Apochromatic high-performance refractors.
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.
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Explore Scientific ED80 Essential Series Air-Spaced Triplet Refractor Telescope - ES-ED0806-02
Explore ScientificDescription The ED80 Essential Series Air-Spaced Triplet Refractor is a true apochromatic telescope that reveals celestial wonders like the desola...
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Original price $ 1,099.99 - Original price $ 1,099.99Original price$ 1,099.99$ 1,099.99 - $ 1,099.99Current price $ 1,099.99| /
Explore Scientific ED102 Essential Series Air-Spaced Triplet APO Refractor Telescope - ES-ED10207-02
Explore ScientificDescription The Explore Scientific ED102 Essential Series Air-Spaced Triplet APO Refractor Telescope is a true apochromat refractor that reveals o...
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Original price $ 1,799.99 - Original price $ 1,799.99Original price$ 1,799.99$ 1,799.99 - $ 1,799.99Current price $ 1,799.99| /
Explore Scientific ED127 Essential Series Air-Spaced Triplet Refractor Telescope - ES-ED127075-04
Explore ScientificDescription The Original Classic Explore Scientific ED127 Air-Spaced Triplet, Retooled for the Astrophotographer: New precision front cell wit...
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Original price $ 1,809.96 - Original price $ 1,809.96Original price$ 1,809.96$ 1,809.96 - $ 1,809.96Current price $ 1,809.96| /
Explore Scientific ED80 Essential Series Air-Spaced Triplet Refractor Telescope with iEXOS-100-2 PMC-Eight Equatorial Tracker System with WiFi and Bluetooth, 2 Extra Counterweights, Field Flattener and Solar Filter
Explore ScientificSolar Photography Starter Package This package is also great for starting your nighttime photography -- called astrophotography. Simply remove the...
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Original price $ 899.99Original price $ 899.99 - Original price $ 899.99Original price $ 899.99Current price $ 720.99$ 720.99 - $ 720.99Current price $ 720.99| /
Certified Pre-Owned Explore Scientific ED80 Essential Series Air-Spaced Triplet Refractor Telescope
Explore ScientificCertified Pre-Owned Refurbished These Certified Pre-Owned items -- including telescopes and accessories -- have been thoroughly inspected by the E...
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Original price $ 799.99 - Original price $ 799.99Original price$ 799.99$ 799.99 - $ 799.99Current price $ 799.99| /
ED80 FCD-1 Air-Spaced Triplet Refractor Astrophotography Telescope
Explore ScientificDescription Explore Scientific 0.8x focal reducer and the Air-Spaced Triplet 80-mm FCD-1 Refractor creates a 5-element wide-field astro-imaging sy...
View full detailsOriginal price $ 799.99 - Original price $ 799.99Original price$ 799.99$ 799.99 - $ 799.99Current price $ 799.99| /Save $ 0.00 Save $ 0.00