EvoStar 80ED - SKU# S11100
- 80 mm apochromatic Refractor with Schott BK-7 and FPL-53 ED glass
- 600 mm focal length (f/7.5)
- Dual-speed 2″ Crayford-type focuser with 1.25″ adaptor
- 8×50 RA erect-image finderscope
- 2″ dielectric diagonal
- 20 mm and 5 mm 1.25″ eyepieces
- Tube-ring attachment hardware and Aluminum carry case
Sky-Watcher EvoStar 80ED APO Refractor: Portable Optical Powerhouse!
Due to their unobstructed textbook-like diffraction patterns and exotic optical properties, the ED-APO produces the sharpest, highest quality imaging obtainable from any telescope optical design. These breathtakingly pristine celestial views are coveted by experienced amateur astronomers.
Observing with SW EvoStar 80ED 80 mm Refractor
The Sky-Watcher ED-APO 80mm is a modestly wide-field telescope offering bright, wide swaths of sky in a single view. It is well suited for wide-field astronomical observation of prominent nebulae, star clusters and galaxies from a dark-sky location, or can be used as an astrograph for sky photography. As a terrestrial spotting scope or telephoto lens, the ED-APO’s performance is absolutely superb. Ultra high contrast allows the subtlest of details to be easily scrutinized under conditions of good seeing.
As an astrograph, the SW EvoStar 80ED delivers superb performance imaging a wide spectrum of astronomical phenomenon.
Sky-Watcher ED-APOs—the Ultimate Refractors
Sky-Watcher ED-APO refractors provide the finest images obtainable—bar none—in their design class. If you are on a quest for the ultimate in pristine, near textbook-perfect astronomical imaging, look no further! Sky-Watcher ED apochromatic refractors deliver dramatic coal-back skies and faithful, contrast-rich views of planetary and deep-space phenomenon that are second to none.
Virtually Eliminates Residual Chromatic Aberration
The Sky-Watcher ED-APO design assures virtual elimination of residual “false color" (i.e. chromatic aberration) normally present in 2-element achromatic lens designs which utilize standard crown and flint glasses.
Pride and Perfection in Optical Manufacturing
Every lens element is individually inspected for purity and absence of striae and other image-degrading imperfections. Every lens is pitched polished to exacting standards of optical fabrication and performance by highly skilled opticians utilizing state-of-the-art methodology and rigidly controlled optical testing procedures.
Metallic High-Transmission Lens Coatings
Each air-to-glass lens surface has exotic anti-reflection metallic coatings applied to ensure optimum light through-put. The proprietary Sky-Watcher “Metallic High-Transmission Coatings" (MHC) are the finest photon anti-rejection coatings in their class.
Light-Baffled Optical Systems
The objective lens cell is light-baffled to reject stray, unfocused light. The draw tube is likewise baffled to insure optimum contrast. The tube interior is flat blackened to help prevent unfocused internal light reflections from reaching the focal plane.
|Optical Design||ED Doublet|
|Lens Coatings||Fully Multi-Coated|
|True Aperture (mm)||80|
|Primary Aperture (mm)||80|
|Focal Length (mm)||600|
|Light Gathering (compared to next size down)||24%|
|Focuser||2" Dual Speed Crayford|
|OTA Length (Retract/Ext.)||22.5"|
|OTA Outer Diameter||4.5625"|
|OTA Weight (with accessories)||7.3|
|Included Finder||8x50 RACI|
|Included Diagonal||2" Dielectric|
|Included Eyepieces||25mm LET/5 Planetary|
|Magnification w/ Included Eyepieces||30x/120x|