Esprit 100mm ED Triplet APO Refractor
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Esprit 100mm ED Triplet APO Refractor

Price: $2499.00
Item #: S11410

Product Description

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
  • Back focus: 68.819mm

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) 100 mm (3.94 in)
Focal Length 500 mm (20 in)
Focal Ratio 5
Finderscope 9x50, erect-image, right-angle
Diagonal 2", dielectric coatings
Tube Rings With 3" (CGE Style) dovetail plate
Highest Useful Magnification 236 x
Lowest Useful Magnification 14 x
Limiting Stellar Magnitude 12.5
Resolution (Rayleigh) 1.39 arc seconds
Resolution (Dawes) 1.16 arc seconds
Light Gathering Power (Compared to human eye) 204 x
Optical Coatings Fully multi-coated
Fully Illuminated Field 43 mm (1.69 in)
Optical Tube Length 17 in (432 mm)
Optical Tube Weight 18 lbs (8.16 kg)

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