Royal Observatory Greenwich 7x50mm Porro Celestron Binoculars

The large 50mm objective lenses and coated optics offer amazing light-gathering capabilities that bring celestial objects into bright, sharp focus, making them perfect for comet watching, stargazing, and viewing craters on the Moon.  Royal Observatory Greenwich Porro Prism 7x50mm’s wide field of view lets you explore expansive swathes of the sky to quickly pinpoint exactly the object you want to see, then keeps it in your sights without constant movement.

From our astronomer here at Royal Observatory Greenwich:

 “Whether you want to zoom in on the ‘seas’ of the Moon, follow the paths of the Galilean moons of Jupiter or count the stars in the Pleiades, a pair of binoculars is a fantastic choice for stargazing - particularly for those just starting out. Far simpler to use than most telescopes, and far more affordable too, you can still achieve excellent views of the night sky.

In fact, in the case of some larger objects in the sky, like the Hyades cluster, you might just get a better view than a telescope can offer. If you have difficulty keeping your binoculars still, consider a tripod, or monopod to steady your view while you gaze at the majesty of the Universe.”

Dr Greg Brown is an astronomer working at Royal Observatory Greenwich. In his time in research at the University of Warwick, he studied some of the largest explosions in the Universe and the supermassive black holes hiding in distant galaxies. 

Coated optics dramatically increase light transmission bringing celestial objects into bright, sharp focus, for brighter images with increased contrast and resolution and the large exit pupil provides maximum light during night-time and low-light viewing sessions.

These binoculars are designed and intended for use by those 14 years of age and older and make the perfect introduction to binocular sky watching, night sky observation and astronomy. 

Also suitable for birdwatching, trainspotting and other hobbies.  Great portability means these binoculars are easy to carry in a rucksack or in the car.

Caution: viewing the sun may cause permanent eye damage. Do not view the sun with your binoculars or with the naked eye.

Features

• Wide field of view reveals a larger portion of the night sky, allowing you to view more of the comet's impressive tail
• Large 50 mm objective lenses have tremendous light-gathering ability, ideal for astronomical use
• Multi-coated optics dramatically increase light transmission for brighter images with increased contrast and resolution
• Large exit pupil provides maximum light during night-time and low-light viewing sessions
• Strong and durable aluminium housing

Specification

• Magnification: 7x
• Objective Lens Diameter: 50mm (1.97")
• Angular Field of View: 6.6°
• Linear Field of View (@1000 yds) / @1000 m): 348 ft (116 m)
• Exit Pupil: 7mm (.28")
• Eye Relief: 14mm (.51")
• Close Focus: 30 ft (10 m)
• Interpupillary Distance (max): 72mm (2.83")
• Interpupillary Distance (min): 56mm (2.20")
• Dioptre Adjustment Range: ±3
• Lens Coatings: Coated
• Prism Glass (Type): BK7
• Weight: 3 oz (774 g)
• Environmental Protection: Water Resistant
• Nitrogen Filled: No
• Tripod Adaptable: Yes
• Carrying Case: Woven Nylon
• Dimensions: 168mm x 198mm x 64mm (6.6" x 7.8" x 2.5")
• Included Items: Neck strap, Carrying case, Objective lens caps, Eyepiece caps, Lens cloth, Instruction manual
• Celestron in association with the Royal Observatory Greenwich
• Boxed
• To maximize your enjoyment of this binocular, please read the instruction manual included before using it
• Never look directly at the Sun with the naked eye or with this optic. Permanent and irreversible eye damage may result.
• Never use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it.
• Never leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present

The Royal Observatory Greenwich is the home of Greenwich Mean Time and the Prime Meridian, and one of the most important historic scientific sites in the world. Since its founding in 1675, Greenwich has been at the centre of the measurement of time and space.

To aid with your stargazing, discover our collection of Astronomy Guides.  Shop our full collection of Astronomy and Space gifts.