Celestron SkyMaster Pro ED 15x70mm Porro Prism BAK-4 Binoculars Matte Black. 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 Celestrons proprietary XLT coating technology the view through a SkyMaster Pro ED sets the standard for astronomy binoculars. ED Objective Lenses Extra-Low Dispersion (ED) glass virtually eliminates chromatic aberration also known as color 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. Celestrons 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 EDs lens surfaces are fully multi-coated and feature Celestrons proprietary XLT optical coating technology. These powerful coatings similar to the ones youll find on our observatory-grade telescopes decrease reflectivity for higher optical throughput across a broad range of the visible light spectrum. Whats 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 70mm 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 viewingespecially at dawn or dusk. The Body Custom-designed rubber armor 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 nearly 16mm 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 users eye behind the eyepieces at the correct distance for optimal viewing. Ways to Observe The Celestron SkyMaster Pro ED binocular is tripod-adaptable. You can use a binocular tripod adapter (not included) to mount it on any standard photographic tripod or monopod for extended viewing or digiscoping (photography through the eyepiece). SkyMaster Pro EDs eyepieces are threaded to accept standard 1.25 astronomical eyepiece filters. Adding the right filter can deliver game-changing views for terrestrial and celestial 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. Remember the binocular needs a set of two filters. For a complete list of filters and their benefits click here. Share your greatest discoveries with friends and family Pair your SkyMaster Pro ED binocular with a smartphone adapter to capture images and video through the eyepiece. Specifications for Celestron SkyMaster Pro ED 15x70mm BAK-4 Porro Prism Binoculars: Manufacturer: Celestron Color: Black Magnification: 15 x Objective Lens Diameter: 70 mm Prism System: Porro Prism Material: BAK4 Eye Relief: 15.7 mm Exit Pupil: 4.4 mm Field of View Linear: 230 ft at 1000 yds Optical Coating: Fully Coated Binoculars Focus System: Center Focus Interpupillary Distance: 56 - 72 mm Close Focus: 42.7 ft Diopter Adjustment Range: +/-3 dpt Weight: 73.7 oz Finish: Matte Fabric/Material: Rubber Features of Celestron SkyMaster Pro ED 15x70mm BAK-4 Binoculars Celestrons legendary SkyMaster binoculars get an upgrade with ED objective lenses for superior images virtually free of chromatic aberration with lifelike color increased resolution and improved contrast Large 70mm objective lenses offer excellent light-gathering abilityperfect for astronomy Threaded eyepieces accept all standard 1.25 astronomical eyepiece filters to bring out details or reduce the effects of light pollution BaK-4 prisms and fully multi-coated optics with XLT coatings boost light transmission through the optical path for brighter more detailed images The widely spaced objective lenses of the Porro prism optical design provide an enhanced 3-D view Eyeglass-friendly with generous eye relief and padded twist-up eyecups Durable rubber-armored housing with improved ergonomics for comfortable use in the field Tripod-adaptable for extended viewing sessions Package Contents: Celestron SkyMaster Pro ED 15x70mm BAK-4 Binoculars Binoculars Objective Lens Caps Eyepiece Covers Rainguard Neck Strap Lens Cloth
