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...
View full detailsOriginal price $ 926.99 - Original price $ 926.99Original price$ 926.99$ 926.99 - $ 926.99Current price $ 926.99| /Save $ 0.00 Save $ 0.00 -
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Explore ScientificFor delivery before the April 8th total solar eclipse, choose the appropriate expedited shipping option at checkout Solar Photography Starter Pack...
View full detailsOriginal price $ 1,864.26Original price $ 1,864.26 - Original price $ 1,864.26Original price $ 1,864.26Current price $ 1,029.95$ 1,029.95 - $ 1,029.95Current price $ 1,029.95| /Save $ 834.31 Save $ 0.00