Telescope 80EDX Esprit - Skywatcher
Designed for the discerning amateur astronomer, the Sky-Watcher ESPRIT series refractors achieve performance equivalent to high-end equipment. With their exclusive three-element air-spaced design, chromatic aberration is completely controlled, delivering images with exceptional sharpness and contrast. The "spirit" of this range lies in an objective lens featuring a high-quality ED triplet. Thanks to a central ED lens (from the renowned Japanese manufacturer Hoya), Sky-Watcher has opted for the best to deliver high-performance optics for both planetary and imaging. Moreover, the barrel is adjustable, unlike other manufacturers.
The use of multi-layer coatings on all surfaces significantly limits losses due to lens pass-through, making the Esprit 80EDX brighter and more contrasty than conventional, less well-corrected refractors. The "Metallic High-Transmission" (MHC) treatment is applied to the air-glass surfaces ensuring stunning results (transmission close to 99.5%).
Optional Corrector Available
An optional screw-in field corrector (less flexure) features two 48mm diameter lenses and provides a perfectly flat field of view across the entire image circle. Its oversized lenses ensure a wider, brighter aperture and exhibit no internal reflections. Thanks to the optional corrector, the Esprit 80EDX can be fully utilized at its f/5 focal ratio. This makes it particularly suited for deep-sky photography. Point the Esprit 80EDX at the most beautiful nebulae or galaxies (Orion, Andromeda, etc.) with a digital camera or CCD/CMOS camera.
The Sky-Watcher Linear Power 11:1 Focusing System
The Sky-Watcher Esprit series features a high-quality focuser: the Linear Power. To be consistent with the optics and provide good results in astrophotography (where focus is of prime importance) the eyepiece holder is a rack with a high load capacity for the largest sensors. With a 2.7" (68.5mm) input format, the Linear Power (patented design) is both robust and precise thanks to an 11:1 gear ratio.
Robustness
To meet the demands of amateur astronomers, the optical tube is made entirely of steel and machined with high precision using a CNC (computer numerically controlled machine). No plastic parts are used! This ensures robustness and a particularly attractive appearance. The interior is blackened and baffled to limit the intrusion of stray light.
Specifications
- Optical Design: Triplet Apochromatic Objective
- Useful Diameter: 80mm
- Focal Length: 400mm
- F/D Ratio: 5
- Image Circle Diameter (corrected): 33mm (with optional corrector)
- Mechanical Backfocus: 160mm (at native focus) - 66mm (with optional field corrector)
- Focusing Device: 2.7" Linear Power Rack and Pinion with 1:11 Gear Ratio
- Focusing Unit: Rotating Standard Double Barrel - 2" (50.8mm) and 1.25" (31.75mm)
- Photographic Adapters: Multiple (included)
- Dew Shield: Retractable
- Optical Tube Length: 446mm (dew shield retracted) - 588mm (dew shield extended)
- Optical Tube Weight: 4kg
Supplied Items
- 1x Tube Sky-Watcher Esprit 80EDX Refractor Optics
- 1x Sky-Watcher Vixen-Type Male Dovetail
- 1x Retractable Dew Shield
- 1x Carrying Handle
- 2x Synta-Type Finderscope Bases
- 1x Hard Carrying Case
