Celestron 71198 Cometron 7x50 Porro Prism Binoculars, Black

Product Information

Great valueI bought the Binoculars for observing at night, unfortunately we’ve had clouded evenings since we got them, however daytime use has been great, clear vision and very lightweight. (20/09/2020) Nigel - Nottinghamshire

Examine any binoculars and you’ll discover that one of several combinations of numbers separated by a 'x' will be visible — for example, 7x40, 10x50, 8x40 and so on. These numbers, which are often located close to the eyepieces, tell you the magnification and aperture of the optical system. For example a 10x50 binocular has a magnification, or 'power' of 10x with front lenses with a diameter of 50mm. It’s these numbers that reveal which objects you can observe by telling you how much you can magnify them by and how much light your binoculars can collect. The prisms are of the Porro design preferred for astronomy. But they are cast of the slightly cheaper BK7 glass. All other binoculars we reviewed are BAK4. We saw the difference easily when comparing the exit pupil of the high-quality Oberwerk 8x40 (BAK4) to that produced by this Celestron 7x50. Instead of the sharply defined disc of light projected by the Oberwerks, the Cometrons yielded a fuzzy pseudo-circle, which hardened inward to a diamond-shaped (slightly stretched, rotated square) point on top. The exit pupil is the disc of virtual image at the binoculars' focus point. It’s the circle that you actually look into.) Celestron Cometron 7x50: Functionality They have a wide field of view, measuring about 6.5 degrees. This makes them great for observing celestial events like the moon passing through or near a large star cluster, like Pleiades in the Taurus constellation. When you look through these binoculars, you'll see sharp, pinpoint stars throughout the entire view, with great contrast. The 7x magnification and 50mm objective lenses make the Celestron Cometron 7x50 perfect for kids (see them featured in our best binoculars for kids guide). It is a known fact that children have better night vision than adults, meaning they do not require high-end binoculars to see the same amount of light that an adult would with a more powerful pair. Field of view: The field of view is the amount of scenery that you can see through the binoculars. This can be important for activities like birdwatching or sports events where you want to be able to follow the action across a wide area. Some Best-Selling 7×50 Binoculars Models 1. Steiner Marine 7×50 Binoculars:The larger the objective lens, the more light is gathered into the lenses, which results in a brighter image, which is especially good in low light conditions such as at dawn and dusk or cloudy days. The Tornado from Konus is their premier model. The binoculars float, are compact in design and are identical to the Gael Force and Talamex Lankhorst Taselaar Floating binoculars except for the colour and the pattern of the grip inserts. They have a range finder. I know if you are a person who is always on the go and constantly taking binoculars with you, you are going to appreciate the durability of these binoculars. They have a solid build quality and can handle pretty hard use without breaking. Come here, let me tell you a secret thing, I love this pair so much. Why it’s best Weight: The weight of the binoculars is an important consideration, especially if you’ll be carrying them around for extended periods of time. A lighter weight can be more comfortable to use, but heavier binoculars may offer better image stability.

Celestron is a well-respected brand with a strong reputation in the field of technology, and the SkyMaster binoculars, including the 15x70 'giant' model, deliver excellent views at an affordable price. Despite being a bit on the heavy side, these binoculars are durable and we think they offer impressive quality for their cost. However, as well as these, the combination of a modest 7x power with the reasonably large, but not giant 50mm objectives is also one of the most frequently used setups for observing the night sky using binoculars. The 'T*' indicates that the lenses have multiple coatings (verses the earlier T single coating), which give a brighter image. The T* coating was introduced on Zeiss binoculars in 1978 If you need 7x50 Marine Binoculars with a reticle, compass, submersion protection, then Steiner makes the following models with those features and more:Another thing that sets these binoculars apart is their waterproofing. This means that even if it rains or gets wet, your view will be unimpeded by water droplets or other elements that could damage your optics. Floating prism system In our Nikon Monarch HG 10x42 review, we loved these so much that we found them hard to fault. The optics are top-quality and we found almost zero chromatic aberration. This is thanks to Nikon's multilayer coatings on all glass elements and the included Extra-low Dispersion (ED) glass elements. Because of their wide field of view and excellent inbuilt field-flattened technology, wildlife observers notably benefit from the image being sharp from edge to edge. Whichever model you decide to go for there are plenty on the market to suit a variety of budgets, observing interests and level of skywatcher. How we test the best binoculars First of all, these binoculars offer high-quality optics. Their lenses deliver clarity and detail, even in low light or when viewing objects up close. This is perfect for marine enthusiasts who need to be able to see clearly at any time of day or night.

Roll-down rubber eyepiece guards let eyeglass wearers find their best focus point within the relatively short 13mm of eye relief (Image credit: Jeremy Lips & Dave Brody) binoculars are commonly used for the best resolution. These binoculars are used when a person sees things in dim light. Its magnification is ten, and the effective diameter of an objective lens is 25mm. The diameter of its exit pupil is 4.2mm, and 7.6 is the field view. It produces a clear and sharp image. The magnification power of binoculars relies upon the intended application. It is the non-adjustable and permanent character of many binoculars. It is not a feature of zoom binoculars. Optical Parameters In Binocular Magnification Chart A larger objective lens diameter is also essential, especially if you plan on using your binoculars in low-light conditions. The larger the objective lens diameter, the more light can enter the binoculars, resulting in a brighter and clearer image. Uses of 7×50 BinocularsTouring the heavens with this pair of telescopes is like using two four-inch (100 mm) refractor telescopes with added 25x magnification as if a mad scientist had blended them using an experimental teleporter. The distance between the lens of the rear eyepiece and the eyepoint or exit pupil is called eye relief. A viewer places the eye behind the eyepiece in eye relief to see the image. Potential eye relief is increased when an eyepiece of a larger focal length is used. Eg 18mm, the distance between your eye and the eyepiece for comfortable focus. This is a critical performance factor, especially important for those wearing spectacles: the longer the distance, the better. Testers’ comments were favourable regarding the compact size and light weight, but some had a little difficulty reading the compass – the blue compass light sent some flare into the field of view – and the damping was found to be less effective than some of the others.

The compass light was at the right level for night-time viewing, although there was some flare into the line of vision. The girls found them on the heavy side, and while the case has no grips, the rubber casing has a non-slip finish. When comparing binoculars, the main consideration is their intended use. To understand which size better suits your needs, you’ll need to understand what the numbers in the binoculars’ description means. A 7x binocular will be easier to hold steady than an 8x or 10x binocular which with increased magnification will also increase the shaking of hands when viewing through the lenses.

Its magnifying power is 12x, and the diameter of the effective objective lens is 42mm. The distance of the exit pupil is 3.5mm with a 6.5-degree field of view. Its weight is approximately 840 g it can be a choice for every hiker or traveler. Its lightweight along with better resolution is demanding. 20×50 Binoculars Range Some prefer compact binoculars, while others want distance gauges and integrated compasses. Names like Steiner and Nikon are joined on our list by lesser known but decent companies that make more affordable units. For the serious sailor looking for an item to last a lifetime, don’t be fooled by features. On the other hand, having enjoyed using some of the features on (especially the Hooway) cheaper models, there are no complaints there. There are ten different magnification power of The best binoculars. This is a complete and comprehensive binocular magnification chart guide. You must need high-power magnification for wildlife viewing binoculars. 7x Magnification of The Binoculars This is a specification for the prism glass. BaK4 is superior to BaK7: it shows a truer round view, which translates to better light transmission and edge-to-edge sharpness.