Sky Watcher Esprit 80mm ED APO Triplet Refractor - S11400


What We Like About the Sky-Watcher 80mm Esprit Refractor

More About Sky-Watcher Esprit ED Triplet APO Refractors

Designed with the discerning astrophotographer in mind, Sky-Watcher USAs top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more.

With their three-element air spaced objective lens design, made of high quality Schott BK-7 and FPL-53 ED glass, false color is completely eliminated, yielding exceptional contrast and sharpness. Knife-edge baffles in the optical tube increase contrast even further, and the included 2-element field corrector guarantees a flat field across the entire imaging plane. The Sky-Watcher exclusive Helinear Track focusing system provides a smooth, rock-solid focuser with zero image shift.

All Sky-Watcher USA Esprit refractors come with a 9 x 50 right angle finderscope, a 2" star diagonal, a 2-element thread-on field flattener, and a camera adapter as well as a Vixen-style dovetail and padded case.

Sky-Watcher USA 80mm ED APO Triplet Esprit Refractor Specifications:

Optical Design: Apochromatic Refractor
Aperture: 80 mm (3.15")
Focal Length: 400 mm
Focal Ratio: f/5
Highest Practical Power: 120X
Coatings: Fully multi-coated
Field Flattener: Thread-on doublet
Focuser: 2.7" linear power w/micro focus
Diagonal: 2" with dielectric coatings
Finderscope: 9x50 RA erect-image
Camera Adapter: Canon EOS
Tube Ring: Includes CG5 style dovetail bar
Dew Shield: Fixed Case: Aluminum foam lined
Image Circle: 33mm
OTA Weight: 4 lb.
OTA Length: 17.375"
Back focus: 75mm