Celestron 71198 Cometron 7x50 Porro Prism Binoculars, Black

Product Information

They are professional binoculars that are suitable for the nautical sector as in addition to being waterproof they are also floating. A 7x magnification binocular is considered the ideal marine or low light binocular, this size would be perfect as a gift when you’re unsure of what the binoculars would be used for.

The more you pay for a pair of binoculars, the more technical information you’re likely to be given. These models feature the same stylish, soft natural rubber design and styling as the Naturesport range except these models have been upgraded with advanced features for maximum performance.All goods are shipped with UPS, DPD, DHL, DX Express, ParcelForce and Royal Mail, we do not use budget couriers, we only ship to UK mainland addresses and do not ship to forwarding agents or PO boxes. Designed for the outdoors the range is fully waterproof and nitrogen filled to prevent fogging of the optics. So, rubber covering is fine to protect from knocks and stop them sliding around, but it’s no guarantee they are waterproof. Not Fully Multi-Coated – Once again these are Multi-Coated, not Fully Multi-Coated, which is a little of a disappointment as it tells us that only some, not all lens surfaces have anti-reflection coatings.

The problem here is that the magnification of the image also magnifies any movement, so the higher the power, the harder it is to keep the view still. I bought these to replace a similar pair I broke by standing on them whilst fighting with a wayward sheet. 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.A linear vertical and horizontal scale visible in one lens which enables distances or heights to be determined, either by reading of a scale marked on the casing or by calculation. Used by the ORCA Survey teams to locate, identify and track whales and dolphins the binocular uses extra-large prisms and anti-reflective multi-coatings to maximise field of view, resolution and light transmission needed for accurate observation at distance.

Navigation Tools Dividers/ Compasses Celestial Navigation Nautical Slide Rules/ Plotting Aids Navigation Computer Navigation Kits Parallel Rules Plotting Tools RoadRule/ LightRule Sextants/ Scopes Writing Aids Imray Charts Magnetic Compasses C.Above is an excerpt from a review authored by Paul Money and published in Sky at Night September 20. The exit pupil size is directly related to both the magnification and the size of the objective lenses. Optical performance is superb due to premium quality BaK-4 prisms, multi-coated optics, long-eye relief, and oversized eye-lenses. The Visionary Classic range of binoculars provide excellent value for money without compromising image or build quality. The girls found them on the heavy side, and while the case has no grips, the rubber casing has a non-slip finish.