Esprit 150mm ED Triplet APO Refractor
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Esprit 150mm ED Triplet APO Refractor

Price: $6399.00
Item #: S11430

Product Description

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
  • Back focus: 100mm

Designed wtih 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, D-style dovetail and padded case. Everything you need to get out under the stars.

 

Optical Design Refractor
Field Flattener Included, thread-on
Aperture (mm) 150 mm (5.9 in)
Focal Length 1050 mm (41 in)
Focal Ratio 7
Finderscope 9x50, erect-image, right-angle
Diagonal 2" dielectric coatings
Tube Rings With 3" (CGE Style) dovetail plate
Highest Useful Magnification 354 x
Lowest Useful Magnification 21 x
Limiting Stellar Magnitude 13.4
Resolution (Rayleigh) 0.93 arc seconds
Resolution (Dawes) 0.77 arc seconds
Light Gathering Power (Compared to human eye) 459 x
Optical Coatings Fully multi-coated
Fully Illuminated Field 43 mm (1.69 in)
Optical Tube Length 39 in (991 mm)
Optical Tube Weight 32 lbs (15 kg)
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