Sky-Watcher

Esprit 80mm ED APO Triplet Refractor


  • Sale
  • Regular price $1,699.00

Currently back-ordered, please contact us for estimated availability.


  • 80 mm apochromatic 3-element refractor
  • 400 mm (f/5)
  • Fully multi-coated
  • Thread-on field flattener included
  • 2.7″ focuser w/micro focus
  • 2″ Diagonal with dielectric coatings
  • 8×50 RA erect-image finderscope
  • Canon camera adapter included
  • Tube rings with CG5 style dovetail bar
  • Aluminum foam lined case
  • 33mm image circle
  • OTA Weight: 8.8lbs.
  • OTA Length: 17.375″ (fixed dew shield)
  • Back focus: 75mm

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 8 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 Info
Optical Design ED Triplet Refractor
Lens Coatings Fully Multi-Coated
Glass Type BK7 (2)/FPL-53(ED)
Primary Aperture (mm) 80
F/Ratio 5
Focal Length (mm) 400
Observational Info
Dawes Limit 1.45
Rayleigh Limit 1.75
Limiting Mag. 12
Minimum Magnification 11
Maximum Magnification 157
General Info
Focuser 2.7" Dual Speed R&P
OTA Length (Retract/Ext.) 17.4"
OTA Outer Diameter 4.875"
OTA Weight (with accessories) 8.8
Accessories
Included Finder 8x50 RACI
Included Diagonal 2" Dielectric
Mounting Accessories V-Rail Foot
Included Eyepieces None
Included Case Yes
Corrector Yes
SKU: S11400
Barcode: 050234114004