Esprit 80ED, 100ED, 120ED and 150ED Super APO refractors have a doublet field flattener to get a flat field and minimize aberration and distortion. Their wide 48mm opener ensures a larger and clearer aperture and also extremely minimized halation. Connect the triplet and doublet field flattener with a high precision thin thread to keep the optical axis perpendicular to the image. 

Main Features: 

- Premium optical materials 

- Short focal length and full frame corrected focal plane 

- Excellent field flatness 

- Precision linear power focuser is standard 

- Metallic high-transmission lens coatings 

- Light-baffled optical systems 

- Telescope tube attachment hardware

- Full-frame Corrected Focal Plane

- Zero detectable Colour Fringing even on Bright Objects

- Knife-edge Baffled Optical System

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• “I’m pleased to report that the Esprit 120 really performed!” 

• “I compared its performance with high-end Officina Stellare and Astro-Physics 105mm and 130mm Apos employing similar premium glass. Even at high magnification with a 3mm eyepiece, star images appeared just as sharp,aberration-free and colourless as the best.  I was Impressed.”

• “it exhibited none of the aberration oddities I’ve seen in some test telescopes, effects created by cold temperatures pinching optics.”

• “…the Esprit 120’s performance matches the best in the business at a competitive price…”

• “Sky-Watcher’s Esprit refractors become very attractive options for anyone looking for the best.”

Review on SkyNews by Alan Dyer ( www.skynews.ca | review)