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Sky-Watcher USA

Esprit 100mm ED Triplet APO Refractor (S11410)

  • 2,49900

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Our Take

The Sky-Watcher Esprit 100mm is an excellent option for those looking for a step up from the smaller 80 mm scope.  With the dew shield fully retracted, the 100mm has nearly the same length as the 80, making it just as compact and portable, but with more aperture.  With a very fast f/5.5 focal ratio, the Esprit 100 is a traveling astrophotographer's dream.

Quick Overview

  • 100 mm apochromatic 3-element refractor
  • 550 mm (f/5.5)
  • 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
  • 40mm image circle
  • OTA Weight: 16.3lbs.
  • OTA Length: 24.5" Extended and 17.3125" Retracted
  • Telescope Back Focus: >185mm
  • Flattener Back Distance: 63mm


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.



100 mm

Optical design

Apochromatic refractor

Focal length

550 mm



Back focus

69.8 mm

Image circle

40 mm

Lens elements


Lens glass

FPL-53 ED and Schott glass


3 inch rack-and-pinion focuser with micro focus

Focuser travel

112 mm

Removable field corrector



9 x 50 right angle, correct image

Mount type

D-style dovetail

Length (extended/retracted)

24.5 in/18.3 in

Outer diameter

5.75 in

Tube weight (pounds)




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