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Celestron 71198 Cometron 7x50 Porro Prism Binoculars, Black

£94.995£189.99Clearance
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About this deal

We picked up a mooring in Southampton Water off Calshot Spit where we tested the binoculars during the daytime by, for example, reading the names of buoys or looking at distance detail. Being able to read a compass bearing is also a useful feature, whether for determining position or deciding if there is a risk of collision from a closing vessel. At dusk and at night we compared them by looking at distant objects: Ryde church tower was a favourite. Robust body, comfortable around the eyes due to the softer viewing aperture and very clear results with great details. Fully nitrogen gas filled waterproof, the model is protected from knocks and bumps with specially mounted prism assemblies, strong single die-cast aluminium bodies and durable thick rubber armouring.

Recent developments in lens coatings have improved them to the point where up to around 90% of the light gathered by the objective lens can be delivered to the ocular lens. The convenient proportion between objective aperture and magnification makes observations during dawn phases possible. Although, a narrow field of view makes it harder to locate objects and at very high powers it can be difficult to locate the object you wish to view. Here you should be looking for a binocular that has fully multi-coated optics and which is completely waterproof and fog proof as well as having a number of other small improvements.

Other important factors include ‘feel’, which combines the binoculars’ weight and size with balance, tactility and grip. Most waterproof binoculars have a fixed focus: this solves the problem of sealing the nitrogen gas within moving parts. The exit pupil diameter or the size of the shaft of light exiting the eyepiece is critical in determining how bright an image you will see, especially in low light situations when your eye’s pupils are dilated and thus is incredibly important when considering what binoculars to get for stargazing. It comes with a reticle scale but no built-in calculator ring, and is available in all-black or black and white. The female testers praised their light weight and Oksana liked the soft eye shields, but both found the compass light button hard to press.

CameraWorld is acting as a credit broker offering finance products from Omni Capital Retail Finance Limited. The traditional style body further enhances the high quality feel and rugged build with a large easy to operate focus wheel and dioptre adjustment.CameraWorld is authorised and regulated by the Financial Conduct Authority, registration number 689327. However, because of the complications of viewing through two eye-pieces at once, in most cases, “ Zoom Binoculars” are not really recommended. By using optical BAK-4 glass and a multi-layer coating, these binoculars always provide a bright, high contrast image. Credit is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC, authorised and regulated by the Financial Conduct Authority. Fitted with BAK-4 prisms and a high refractive index multi-coating system for excellent clarity and contrast, this instrument offers excellent edge-to-edge definition and impressive colour fidelity.

BaK-4 Prism Glass Glass – Good quality optical glass is used on the prisms, for a better and brighter view. Designed for the outdoors the range is fully waterproof and nitrogen filled to prevent fogging of the optics. So with just your eyes, Andromeda looks like a dim, fuzzy star, but just by adding a pair of 7x50 binoculars, you can see a small elliptical cloud.Excellent casual stargazing for the money These are a really great item, good value for money, easy to hold for extended viewing, decided on these instead of the 10x50s after advice from Harrisons. Cometron 7x50’s rubberized aluminium housing is durable, lightweight, and tripod adaptable for extended comfort during long stargazing sessions. As you approach another vessel it will of course get larger, but a fishing boat may take some time before its direction can be identified by the naked eye. However, let’s say for example we increase the magnification to 12x and keep the objective lenses the same size.

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