Celestron SkyMaster 20×80 - Astronomy binoculars

Celestron SkyMaster 20×80 – Jumelles géantes haute luminosité pour observation longue distance et astronomie

Visit Celestron SkyMaster 20×80 are among the most popular giant binoculars for astronomers and long-distance terrestrial observers. With a 20x magnification and huge 80 mm lenses, They are designed for maximum brightness in low-light conditions, as well as impressive detail on distant subjects.

Thanks to their Porro BaK-4 prisms, their multi-layer lenses and their very precise focus, les SkyMaster 20×80 offrent un champ lumineux, contrasté et parfaitement adapté à l’observation du ciel nocturne, du paysage, des reliefs montagneux ou des sujets distants. Elles disposent en plus d’une integrated tripod adapter rod, particularly useful given their weight and power.

Giant 80 mm lenses: maximum brightness

The objectives of 80 mm collect much more light than standard binoculars, enabling :

• a excellent visibility at dusk and in dark conditions ;
• easy observation of the brilliant deep-sky objects (clusters, nebulae, multiple stars) ;
• the ability to distinguish between details of far-flung terrestrial subjects ;
• a high twilight factor 40, a guarantee of low-light performance.

The focal length of the lenses (328.6 mm) gives a light ratio of around f/4.1 - very effective for maximizing the brilliance of the objects observed.

20x magnification: perfect for astronomy and long-distance work

Magnification 20x is an excellent compromise between power and ease of use:

• powerful enough to reveal lunar details, star clusters or distant landscape features; ;
• more stable than 25x or 30x while remaining highly immersive ;
• suitable for both astronomy and daytime observation.

Combined with a 4 mm, These binoculars offer far superior low-light viewing comfort compared with smaller-pupil models.

Wide field of vision for comfortable viewing

Malgré leur puissance, les SkyMaster 20×80 offrent un champ agréable à utiliser :

• Angular field : 3,7°
• Linear field Dimensions : 195 ft to 1000 yds (≈ 65 m to 1000 m)
• Minimum focusing distance : 33 m
• Exceptional eye relief 18 mm - ideal for spectacle wearers

Viewing is therefore immersive, bright and comfortable, even during long sessions.

BaK-4 prisms and Multi-Coated optics

La qualité optique est l’un des points forts des SkyMaster 20×80. On y retrouve :

• Porro prisms in BaK-4 glass for high light transmission and a perfectly clear pupil.
• Multi-Coated treatments on lenses for a enhanced contrast and reduced glare.
• Very sharp focus across the entire field, thanks to the optimized internal focusing system.

The result: luminous images, more punctual stars and a visual quality adapted to the demands of amateur astronomy.

Robust construction and secure grip

Les SkyMaster 20×80 offrent une construction solide et fiable :

• Rubber coating for a optimal grip and good protection against light shocks.
• Water resistance (water-resistant) for outdoor use.
• Durable structure ideal for the mountains, seaside or overnights.

Please note: the binoculars are not nitrogen-filled, so they are not totally impervious to internal fogging.

Integrated tripod mount for maximum stability

Given their considerable weight (2.126 kg) and their magnification, comfortable observation requires the use of a tripod. Celestron makes this easy with :

• a integrated tripod adapter rod, more stable than a simple screw adapter; ;
• a universal compatibility with most photo and video tripods.

Avec un trépied, les SkyMaster 20×80 révèlent toute leur qualité optique et deviennent un instrument redoutable pour scruter le ciel ou les paysages lointains.

Accessories included

The binoculars are delivered ready to use, with all the essential accessories:

• Lens caps
• Rainguard (eye protection)
• Nylon carrying case
• Neck strap
• Cleaning cloth
• Instruction manual

Astronomy performance

Avec leurs grandes lentilles et leur pupille de sortie confortable, les SkyMaster 20×80 constituent un excellent choix pour le ciel nocturne :

• Magnitude limit up to 12,0 under excellent skies.
• Moderate sky : 11,0 about.
• In poor skies : 10,0.
• Beautiful views of the Moon, open clusters (Pleiades, Hyades), globular clusters (M13, M3), bright nebulae and more.

For a motivated beginner or an amateur looking for a simple yet powerful solution, these binoculars offer a real gateway to astronomy.

Detailed technical specifications

Solar safety warning

Never observe the sun with these binoculars without a certified sun filter.

• Never look directly at the Sun, with or without optics: risk of irreversible eye damage.
• Never project an image of the Sun through binoculars: risk of internal heat damage.
• Do not leave the instrument unattended, especially in the presence of children.

Pour qui sont les Celestron SkyMaster 20×80 ?

These binoculars are designed for amateur astronomers, to nature observers and long-distance enthusiasts who want a bright, powerful and immersive lens. They offer an excellent compromise between performance, price, versatility and ease of use.