WebJun 28, 2024 · The 2 groups differ by the dispersion and for whatever reasons FPL-53/FCD-100 is "better". In a telescope lens that means that you can "push" the glass more. The real effect is that an f/5 lens with FPL-53/FCD-100 will perform in terms of potential "chromatic aberration" better then the FPL-51/FCD-1 glass. WebEntdecke FRA500 F5.6 APO Astronomisches Teleskop mit Fokusverstellsystem für Askar in großer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung für viele Artikel!
FCD100 vs FCD1 glass - Refractors - Cloudy Nights
WebFeb 13, 2014 · Specifications: Explore Scientific 127ED Apochromatic Refractor. Aperture: 127mm (5.0 inches) Type: triplet apochromatic refractor (Hoya FCD1 ED glass) Focal length/focal ratio: 952mm, f/7.5. Weight (tube assembly, including standard accessories): 20 pounds. Standard accessories: tube mounting rings, 50mm finder, 2-inch diagonal, … WebOct 26, 2024 · Features of this Telescope . . . ED triplet refractor optics: 127mm (5") aperture, 952mm focal length, f/7.5 focal ratio three-lens air-spaced optical system. The optics use a center lens element of Hoya FCD1 (Dense Fluor Crown) glass, the Hoya equivalent of FPL-51 ED (Extra-low Dispersion) glass. deces chatelay39
HOYA GROUP Optics Division Glass Cross Reference Index
WebJun 27, 2024 · I had the ED102CF, and I do not think it is good enough for AP, as the FCD1 glass had bad blue bloating. The focuser is also very bad, with its collimation getting out of whack very easily. If you do get the FCD1 versions, use filters that truncated the the Blue spectrum, such as Astronomik DeepSky RGB and add the L-3 luminance. WebGlass type is not the most important thing: When someone chooses a relatively inexpensive, mass produced telescope because it is advertised as using FPL53 over a telescope using FCD100 that is much more … WebOffering true diffraction-limited optics with genuine HOYA FCD1 ED glass, the ED80 is the perfect size 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 ... deces chenay le chatel 71