Esprit 80mm ED Triplet APO Refractor - SKU# S11400

by Sky-Watcher
$1,699.00

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.

 Specifications

SKU S11400
UPC 050234114004
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

 

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