66mm & 80mm FLUORITE ED APOCHROMATIC REFRACTORS (with Dual-Speed Crayford Focuser)
Sky-Watcher is pleased to introduce a Special Edition of their renowned ED refractors. The same First-Class optics as the Evostar-ED PRO models are now housed in tube assemblies of even higher quality. The tubes are Precision CNC machined & Hard Anodized and feature superb rotatable, tension adjustable Dual-Speed Crayford focusers and Retractable Dewshields. These are exceptionally high Performance telescopes for Planetary and Widefield Deep-sky observations as well as Astrophotography and CCD imaging. Additionally, these telescopes provide outstanding results for Birdwatching and general terrestrial use.
First-Class Optics
Built with two-element multi-coated air-spaced objectives, the second element is made of the highest grade extra-low dispersion (ED) Japanese FPL-53 (Equinox 80) and FPL-51 (Equinox-66) fluorite glass.
Extra-low Dispersion glass allows the optical designer to virtually eliminate chromatic aberration (false color fringing around bright objects), which results in higher resolution and superior contrast in the images.
Each objective lens is finished by hand by skilled opticians and the quality of each telescope is monitored by means of a Ronchi test and an artificial star test. No effort is spared to reach optimal optical quality.
