Celestron SkyMaster Pro ED 20x80 Binoculars

Product Description

Celestron SkyMaster Pro ED 20x80 large aperture binoculars are the ideal choice for amateur astronomers or anyone who observes at great distances. The SkyMaster Pro ED uses superior optics, coatings, internal parts, and housing materials. With large objective lenses, BaK-4 prisms, ED glass, and fully multi-coated optics utilizing Celestron’s proprietary XLT coating technology, the view through a SkyMaster Pro ED sets the standard for astronomy binoculars.

Compatible with 1.25 Filters
SkyMaster 20x80 Pro ED’s eyepieces are threaded to accept standard 1.25 inchastronomical eyepiece filters. Adding the right filter can deliver superior views for terrestrial and astronomical observing. For terrestrial observation, filters can reduce the brightness of sand, snow, and water. For nighttime viewing, filters can cut glare, minimize eye strain, increase contrast, and even combat the effects of light pollution

ED Objective Lenses
Extra-Low Dispersion (ED) glass virtually eliminates chromatic aberration, also known as colour fringing, a visual phenomenon common in magnified optical systems. SkyMaster Pro ED delivers edge-to-edge sharpness with excellent color correction and razor-sharp images. Not all ED glass is created equal. Celestron’s high-quality ED glass delivers brighter, sharper images than non-ED binoculars. The difference is especially apparent in low-light conditions.

Coatings and Prisms
All of Celestron SkyMaster Pro ED’s lens surfaces are fully multi-coated and feature Celestron’s proprietary XLT optical coating technology. These powerful coatings, similar to the ones you’ll find on our observatory-grade telescopes, decrease reflectivity for higher optical throughput across a broad range of the visible light spectrum. What’s more, the prisms inside the binocular are made of high-quality BaK-4 glass, further boosting light transmission. Working together, the fully multi-coated lenses and BaK-4 prisms deliver more light from your target to your eye for brighter, more detailed views.

Objective Lenses
The 80mm objective lenses offer plenty of light-gathering ability for superior low-light performance. The objective diameter-to-magnification ratio is ideal for scanning the skies, observing the Moon and planets, and exploring all the best deep-sky objects. Celestron SkyMaster Pro ED also makes an excellent choice for long-distance land-based viewing, especially at dawn or dusk.

The Body
Custom-designed rubber armoured and a durable chassis protect your SkyMaster Pro ED binocular from damage without weighing you down. Viewing through SkyMaster Pro ED binoculars is comfortable for eyeglass and non-eyeglass wearers alike, thanks to the retractable eyecups and more than 15mm of eye relief. Eyeglass wearers can see the entire field of view while looking through the eyepiece with their glasses by twisting the eyecups down. For those who do not wear eyeglasses, the eyecups position the user’s eye behind the eyepieces at the correct distance for optimal viewing.

Specifications
Magnification: 20x
Objective Lens Diameter: 80mm (3.15")
Focal Length of Objective Lens: TBD
Angular Field of View: 3.4°
Linear Field of View (@1000 yds) / @1000 m): 178 ft (59 m)
Exit Pupil: 4.0mm (.16")
Eye Relief: 15.4mm (.61")
Close Focus: 98.4 ft (30 m)
Interpupillary Distance (max): 72mm (2.83")
Interpupillary Distance (min): 56mm (2.20")
Diopter Adjustment Range: ±3
Twilight Factor 40
Relative Brightness: 16
Limiting Stellar Magnitude: Ideal: 12.02 | Moderate: 11.02 | Poor: 10.02
Lens Coatings: Fully Multi-Coated - XLT Coatings
Prism Glass (Type): BaK-4
Prism Coatings: N/A
Weight: 123.2 oz (3,492g)
Environmental Protection: Waterproof (IPX7)
Nitrogen Filled: Yes
Tripod Adaptable: Yes
Carrying Case: Deluxe Nylon
Dimensions: 335mm x 230mm x 94mm (13.2" x 9.1" x 3.7")

Included Items:
Binoculars
Objective lens caps
Eyepiece Covers
Rainguard
Neck strap
Lens cloth
Non-Silica Dessicant
Case
Instruction manual