Sky-Watcher Evostar-100ED DS PRO Fluorite Apochromatic Refractor OTA

Sky-Watcher Evostar-100ED DS PRO 100mm (4") f/900 Fluorite Apochromatic Refractor Optical Tube Assembly. The Sky-Watcher Evostar ED DS-PRO series is the name for the new generation of professional quality telescopes and mounts of the Sky-Watcher range, targeted at the most discerning and critical observers. Each telescope is manufactured to extremely high levels of optical and mechanical precision, undergoing very strict quality control procedures to ensure the highest standards of quality and performance are consistently maintained. Each objective lens is finished by hand by skilled technicians and the quality of each telescope is monitored by means of a Ronchi test and artificial star test. No effort is spared to reach optimal optical quality.Please note, this is an Optical Tube Assembly only, mount and tripod are available separately.

Sky-Watcher Evostar-100ED Features:

World Exclusive Co-Branding Agreement with Schott.
Selected high-end Sky-Watcher telescopes benefit from the inclusion of Schott glass in their construction. Schott is the recognised world leader in glass utilised for precision optical lens systems, including medical instrumentation and famous brand camera lenses. Sky-Watcher's parent company signed a worldwide exclusive telescope co-branding agreement with Schott in March 2008.

The new Evostar DS-PRO Series ED Apochromatic refractors, in their stunning Black-Diamond livery, house premium optics of the same quality and performance level as our now legendary Equinox series. Superb instruments for both imaging and visual observations.

Apochromatic Refractors, due to their unobstructed, 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 Schott 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.

• Magnification with Eyepieces Supplied: x32
• Highest Practical Power (Potential): x300
• Objective Lens Diameter: 100mm
• Telescope Focal Length: 900mm (f/9)
• 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