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Sky-Watcher USA

Esprit 150mm ED Triplet APO Refractor (S11430)

  • 6,39900

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Our Take

The Esprit 150mm has all the elements of a "forever" scope.  The large aperture provides stunning views of celestial objects.  At f/7 it is well-suited for astrophotography and the included field flattener provides pinpoint stars across a full-frame DSLR.  The performance of the Esprit 150 will leave you to want for nothing!

Quick Overview

  • 150 mm apochromatic 3-element refractor
  • 1050 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: 32lbs.
  • OTA Length: 40.5" Extended and 36.875" Retracted
  • Telescope Back Focus: >170mm
  • Flattener Back Distance: 96mm


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.



150 mm

Optical design

Apochromatic refractor

Focal length

1050 mm



Back focus

100 mm

Image circle

43 mm

Lens elements


Lens glass

FPL-53 ED and Schott glass


3 inch rack-and-pinion focuser with micro focus

Focuser travel

87 mm

Removable field corrector



9 x 50 right angle, correct image

Mount type

D-style dovetail

Length (extended/retracted)

40.5 in/36.9 in

Outer diameter

7.9 in

Tube weight (pounds)




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Telescope Upgrade Path

For our customers who dream of expanding their horizons and gazing deeper into the night sky, we offer personalized telescope upgrade paths. Learn More> 

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