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Home Telescopes Optical Tube Assemblies SkyWatcher Optical Tubes SkyWatcher Evostar 120ED DS PRO Refractor Optical Tube Assembly
The superb Evostar DS-PRO 120 ED Apochromatic refractor in the stunning Black Diamond livery, house premium optics with FPL53 glass to provide the best possible optical performance, making them superb instruments for both imaging and visual observations. The 120mm aperture can easily show great detail when observing the Planets and has plenty of light grasp for deep sky use. Easily mounted on EQ5 class mounts so for the aperture this instrument is very portable and practical.Apochromatic Refractors, due to their unobstructed clear aperture show text-book like diffraction patterns, produce the sharpest, highest quality optical imaging available, bar-none, aperture for aperture, of any telescope optical system.These high-end telescopes all feature a doublet objective lens. One element is made from premium Japanese Ohara FPL-53 Extra-Low Dispersion (ED) glass, which virtually eliminates chromatic aberration to deliver true colour reproduction. Top quality glass is utilized for the Crown element.Each air-to-glass lens surface has exotic anti-reflection metallic coatings applied, to ensure optimum light through-put of approaching 99.5%!!The proprietary Sky-Watcher Metallic High-Transmission Coatings (MHC) are the finest photon anti-rejection coatings in their class. We have published an article explaining the merits of this design, read about ED Doublet refractors.Magnification with Eyepieces Supplied: x32 Highest Practical Power (Potential): x360 Objective Lens Diameter: 120mm Telescope Focal Length: 900mm (f/7.5) Eyepiece Supplied (2"): 28mm LET 2/50.8mm Di-Electric Star Diagonal 9x50 Finderscope Dual-Speed 11:1 2 Crayford Focuser (Backlash-Free) Multi-Coated Objective Lens Supplied with Tube Rings & Mounting Plate Aluminium Carrying Case We have published an article explaining the merits of ED refractors, read about The ED Refractor Telescope.
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