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Sky-Watcher USA

Esprit 120mm ED Triplet APO Refractor (S11420)


  • 3,19900

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Our Take

Featuring top-quality optics, smooth mechanics, and excellent build quality, the Esprit 120 is a superb imaging or visual instrument.  With the included field-flattener, the Esprit 120 yields a 43mm corrected image circle, allowing the use of a full-frame DSLR while providing pinpoint stars to the corners.  The Sky-Watcher Esprit 120mm is truly a delight for any astrophotographer.  

Quick Overview

  • 120 mm apochromatic 3-element refractor
  • 840 mm (f/7)
  • Fully multi-coated
  • Thread-on field flattener
  • 3.0" focuser w/micro focus
  • 2" Diagonal with dielectric coatings
  • 9x50 RA erect-image finderscope
  • Canon camera adapter
  • Tube rings with CGE style dovetail bar
  • Aluminum foam lined case
  • 43mm image circle
  • OTA Weight: 22lbs.
  • OTA Length: 31.5" Extended and 27.375" Retracted
  • Telescope Back Focus: >225mm
  • Flattener Back Distance: 75mm

 

Unsurpased Performance

Esprit three-element air spaced optics deliver images equal to scopes costing thousands of dollars more

 

Two-element Field Corrector

All Sky-Watcher USA Esprits include a two- element field corrector that guarantees a flat field across the entire imaging plane

 

Designed with the discerning astrophotographer in mind, Sky-Watcher USA’s 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, false color is completely eliminated, yielding exceptional contrast and sharpness. 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, 2-inch Star diagonal, 2-element field flattener, camera adapter, mounting rings, dovetail plate and foam-lined hard case. Everything you need to get out under the stars.

 

Model

120 mm

Optical design

Apochromatic refractor

Focal length

840 mm

F-ratio

7

Back focus

75 mm

Image circle

43 mm

Lens elements

3

Lens glass

FPL-53 ED and Schott glass

Focuser

3 inch rack-and-pinion focuser with micro focus

Focuser travel

87 mm

Removable field corrector

Yes

Finderscope

9 x 50 right angle, correct image

Mount type

D-style dovetail

Length (extended/retracted)

31.5 in/27.4 in

Outer diameter

6.875 in

Tube weight (pounds)

22


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