Esprit 80ED APO Triplet


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.

  •  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 
  •  Zero detectable Colour Fringing even on Bright Objects
  •  Knife-edge Baffled Optical System


  • Optical Design: Apochromatic Refractor 
  • Optical Diameter: 80mm 
  • Focal Length: 400mm 
  • F/Ratio: f/5 
  • Highest Practical Power: 120x 
  • Finder Scope: 8×50 right angel erect 
  • Focuser Diameter: 2.7″ Linear Power Focuser 
  • Diagnol: 2″ 90 deg. Dielectric Diagonal with 1.25″ adapter 
  • Tube Weight: 3.97 kg 
  • Tube Dimensions: 8.3cmx45cm 
  • Shipping Weight: 20 kg 
  • Shipping Dimensions: 69x51x39 cm3