binoculars

How useful was prismatic in our understanding of the solar system?
How many planets were discovered through the use of binoculars? Could the man have reached the moon in 1969 without them?
N planets were discovered with binoculars. They are not important in space travel.
Choosing a good pair of binoculars
Binoculars Binoculars are like two telescopes alias pointing to the same area. It is easy to perceive depth, since it has two lenses and not just one, as a monocular.
The binoculars have been around since about the 17th century after telescopes were invented. People used to mount two telescopes side by side and looked through them with both eyes.
Between 1850-1890s, a kind of prism binocular invented that allowed greater depth perception, allowing the eye pieces to be spaced wider apart. These binoculars allow further expansion.
The most affordable binoculars are porro prisms enabling brighter images and are precision instruments. These binoculars are larger and sometimes you have to re-aligned.
One type of binocular prism faces of the prism binocular. This binocular is smaller and narrower, but loses some luster. The good to think about them is that they usually never have to be re-aligned. They are also much lighter. Optical coating corrects this problem. So they are coated binoculars many roof prism.
Optical Coating is a great feature that helps make a brighter image, reducing the amount of light reflected. Light reflected inside the glass blurs the image.
General Binoculars focus by moving a rotating wheel that focuses on both telescopes simultaneously. More Use binoculars sophisticated independent approach which means that each side of the binocular needs to be adjusted individually.
Some binoculars have The image stabilization technology to curb sudden movements. In general, it can be enabled or disabled by the user. This means that very high-powered binoculars can be handy when you normally could not. The image quality is not always so good for binoculars stabilized and are generally more expensive.
Coin-operated Binoculars are very popular at many tourist attractions. They allow a more detailed view. These are always mounted on a pedestal and can be high power.
Military binoculars are usually hand with an increase of 5x and 7x. Military Binoculars are more robust and resistant than regular binoculars and independent use deals, because it is stronger than the central focus. Most military binoculars also have special features that help you work when is wet or to block the laser beams. Sea Binoculars are designed to be easier on the eyes due to sea rocking back and forth.
Astronomical Binoculars allow people to see some elements of the sky from afar. Many moons and planets can be seen with binoculars. Pluto, Eris and Uranus all can be seen more easily by using binoculars. Some users use binoculars smaller increase, so they can have a wider field of vision when using a higher magnification.
![]() Bushnell Powerview 8x21 Compact Folding Roof Prism Binocular (Black) List Price: Sale Price: $13.88 You save: $6.07 (30%) Eligible for free shipping!Availability: Usually ships in 24 hours Average Rating: ![]() DescriptionBushnell PowerView binoculars offer the best of both worlds, combining contemporary styling and design with traditional Bushnell quality and durability. This particular PowerView binocular offers an 8x magnification and a 21mm objective diameter. The fully coated optics, meanwhile, guarantee superior light transmission and brightness, helping you see just about any target, whether you're searching for birds or trying to get a better view of the stage. And users will love the easy-to-use center focusing system, which adjusts quickly to keep your subject in sharp view. Additional features include a nonslip rubber armor housing that absorbs shock while providing a firm grip, a neck strap and a carrying case for easy transport, and 9mm of eye relief. Specifications: Magnification: 8x Objective lens diameter: 21mm Size class: Compact Focus system: Center Prism system: Roof Prism glass: BK-7 Lens coating: Fully Field of view @ 1,000 yards: 378 feet Close focus distance: 21 feet Exit pupil: 2.6mm Eye relief: 9mm Eyecups: Fold down Waterproof/fogproof: No Adapts to tripod: No Weight: 7 ounces Warranty: Limited lifetime Tech Talk Objective Lens: The diameter of the objective or front lens. The larger the objective lens, the more light that enters the binocular, and the brighter the image. Field of View (F.O.V.): The side-to-side measurement of the circular viewing field or subject area. It is defined by the width in feet or meters of the area visible at 1000 yards or meters. A wide angle binocular features a wide field of view and is better for following action. Generally, the higher the magnification, the narrower the field of view. Roof Prism System: In roof prism binoculars the prisms overlap closely, allowing the objective lenses to line up directly with the eyepiece. The result is a slim, stream-lined shape in which the lenses and prisms are in a straight line. The Bushnell 8x21 PowerView FRP compact binoculars combine contemporary styling and design with traditional Bushnell quality and durability. They are easy to use and economical and feature general-purpose roof prisms. They offer 8x magnification and a field of view of 378 feet at 1,000 yards in a compact 7-ounce body. Their black rubber armoring ensures they can sustain active use. Bushnell's 8x21 PowerView FRP compact binoculars include a carrying case and a neck strap for convenience and comfort on the go. Features
ReviewsExcellent Value Very helpful. Great lightweight binoculars Disapointment Powerful Little Binoculars |
![]() Bushnell Falcon 10x50 Wide Angle Binoculars (Black) List Price: Sale Price: $29.90 You save: $20.05 (40%) Eligible for free shipping!Availability: Usually ships in 24 hours Average Rating: ![]() DescriptionFeatures quality Bushnell« fully coated optics for sharp images at an affordable price. Features the patented InstaFocus« system for fast focus so you won't miss any of the action. Rubber armored for comfort and durability. Great for stadium sports as well as hunting, the Bushnell Falcon is the standard in a wide-angle binocular. The durable design and finish allow for use in harsh conditions and rugged terrain. Coated lenses are helpful to keep fog out of vision and fold-down eyecups protect eyeglass lenses from scratching. The InstaFocus lever functions smoothly with just enough tension to control the magnification properly. Features
ReviewsExcellent Binoculars binocullars Very good for amateur use bushnell binoculars Bushnell Binoculars |
![]() Bushnell Powerview 12x25 Compact Folding Roof Prism Binocular (Black) List Price: Sale Price: $19.04 You save: $10.91 (36%) Eligible for free shipping!Availability: Usually ships in 24 hours Average Rating: ![]() DescriptionPower View, 12 x 25 Folding Roof Prism Compact Black Binocular, Center Focus, Comes With Neck Strap & Soft Carrying Case, Clam Pack. Bushnell PowerView binoculars offer the best of both worlds, combining contemporary styling and design with traditional Bushnell quality and durability. This particular PowerView binocular offers a 12x magnification and a 25mm objective diameter. The fully coated optics, meanwhile, guarantee superior light transmission and brightness, helping you see just about any target, whether you're searching for birds or trying to get a better view of the stage. And users will love the easy-to-use Insta-Focus system, which adjusts quickly to keep your mobile subject in sharp view. Additional features include a nonslip rubber armor housing that absorbs shock while providing a firm grip, a neck strap and a carrying case for easy transport, and 9mm of eye relief. Specifications: Magnification: 12x Objective lens diameter: 25mm Size class: Compact Focus system: Center Prism system: Roof Prism glass: BK-7 Lens coating: Fully Field of view @ 1,000 yards: 240 feet Close focus distance: 25 feet Exit pupil: 2.1mm Eye relief: 9mm Eyecups: Fold down Waterproof/fogproof: No Adapts to tripod: No Weight: 11.3 ounces Warranty: Limited lifetime Features
ReviewsExcellent opera glasses I can't focus it well. Nothing to rave about Bad then Good Two lenses will not focus into one picture |
![]() Bushnell PowerView 10x50 Wide Angle Binocular List Price: Sale Price: $42.88 You save: $37.07 (46%) Eligible for free shipping!Availability: Usually ships in 24 hours Average Rating: ![]() DescriptionThe Bushnell 10x50 wide-angle PowerView binoculars combine contemporary styling and design with traditional Bushnell quality and durability. They are easy to use and feature Porro prisms. They offer 10x magnification and a field of view of 341 feet at 1,000 yards. Insta-Focus enables you to focus on your desired object with the single touch of your finger. Black rubber armoring ensures that these binoculars can sustain active use. Bushnell's 10x50 wide-angle PowerView binoculars include a carrying case and a neck strap for convenience and comfort on the go. Features
Reviewsperfect for our needs very goof for the price limited use Pricing Extremely Well Happy |
![]() Bushnell PowerView 20x50 Super High-Powered Surveillance Binoculars List Price: Sale Price: $60.21 You save: $37.74 (39%) Eligible for free shipping!Availability: Usually ships in 24 hours Average Rating: ![]() DescriptionSuper high-powered surveillance binoculars for long-range detailed viewing. Great durability and performance in an attractive ?traditional? porro prism design. Non-slip rubber armor absorbs shock while providing a firm grip. Contemporary styling; includes neck strap and carrying case. Limited lifetime warranty. Bushnell PowerView binoculars offer the best of both worlds, combining contemporary styling and design with traditional Bushnell quality and durability. This particular PowerView binocular offers a 20x magnification--among the most powerful in its class--and a 50mm objective diameter. The multicoated optics, meanwhile, guarantee superior light transmission and brightness, helping you see just about any target, whether you're searching for birds or trying to get a better view of the football field. And users will love the patented InstaFocus focusing system, which holds your subject in sharp focus with a touch of the fingertip. Additional features include a porro prism system, a nonslip rubber armor housing that absorbs shock while providing a firm grip, a neck strap, and 9mm of eye relief. Specifications: Magnification: 20x Objective lens diameter: 50mm Size class: Standard Focus system: InstaFocus Prism system: Porro Prism glass: BK-7 Lens coating: Multi Field of view @ 1,000 yards: 170 feet Close focus distance: 45 feet Exit pupil: 2.5mm Eye relief: 9mm Eyecups: Fold down Waterproof/fogproof: No Adapts to tripod: Yes Weight: 30 ounces Warranty: Limited lifetime Features
ReviewsBINOCULARES bushnell 20x50 kind of big and bulky Bushnell 20x50 Binocular Just couldn't get it to focus, but Amazon is great Great Binoculars |
![]() Celestron SkyMaster Giant 15x70 Binoculars with Tripod Adapter List Price: Sale Price: $69.89 You save: $30.10 (30%) Eligible for free shipping!Availability: Usually ships in 24 hours Average Rating: ![]() DescriptionCelestron and ;s SkyMaster Series of large aperture binoculars are a phenomenal value for high performance binoculars ideal for astronomical viewing or for terrestrial (land) use - especially over long distances. Each SkyMaster model features high quality BAK-4 prisms and multi-coated optics for enhanced contrast. Celestron has designed and engineered the larger SkyMaster models to meet the special demands of extended astronomical or terrestrial viewing sessions. The 15x70 version is one of the most popular models in the series. It offers serious large aperture light gathering in an affordable and reasonably lightweight configuration. Binoculars come in a wide range of shapes and sizes these days, and an even wider range of prices. It's easy to spend less than $100 or more than $500 for what may appear to be, at least outwardly, comparable models. While they may look the same, they are probably quite different on the inside. Recently, the binocular market has seen a flood of giant binoculars at prices that were unheard of just a few years ago. In general, giant binoculars are defined as those that magnify the view 10 times or more and have 70-mm or larger front (objective) lenses. It used to be that the least expensive giant binoculars cost in excess of $150, even $200. All that changed not long ago, when the bottom fell out of the price cellar. Now, several companies import giant binoculars that sell for half that, or less. Celestron's 15x70 SkyMaster binoculars are one of the leaders in the low-price giant binocular arena. They certainly sound good on paper. The SkyMasters include multicoated optics and BaK-4 internal prisms, two features that promise brighter, better images, and key points to look for when judging a pair of binoculars. They also come with an adapter for attaching them to a photo tripod, which is a must to use them to their fullest, and a soft carrying case. But just because they are cheap doesn't always mean they are worth the price. Would it be better to save up for a more expensive pair? To find the answer, I had an opportunity recently to judge the SkyMasters against a pair of Fujinon 16x70 FMT-SX binoculars , one of the finest pairs of giant binoculars sold today. Like the SkyMasters, the Fujinons feature BaK-4 prisms, but also have fully multicoated optics. As a general rule, superior coatings mean superior image sharpness and contrast. But then, that should be expected, given that the Fujinons cost many times more than the Celestrons. While the Fujinons were clearly the better performer, the Celestron SkyMasters held up admirably. Image brightness, quality, and contrast were all remarkable considering their bargain price. Although images were a little soft across the outer 25% of the Celestron's field, the overall view was impressive nonetheless. Some inexpensive binoculars have very sloppy focusing, causing the eyepieces to tilt and shift. Not so with the SkyMasters. I found that their center-focusing mechanism worked smoothly, with no apparently backlash or wobble. Eye relief (the distance you hold your eyes away from the eyepieces to see the full field) is stated to be 18 mm, a good distance for higher power binoculars and an important consideration if you must wear glasses when viewing. The SkyMasters are also light enough to support by hand for short periods of time, although buyers would be well advised to mount them on a sturdy photo tripod. The bottom line is, if you are considering a pair of giant binoculars, whether for bird watching, stargazing, or another recreational use, and have a limited budget, Celestron's giant 15x70 SkyMasters represent an excellent value. --Phil Harrington, author of Star Ware and Star Watch Pros: Exceptional value for the price Light enough to support by hand BaK-4 prisms Multicoated optics Cons: Outer 25% of the field is soft and a little blurry Requires a tripod to use for extended periods Features
ReviewsNice Binoculars, Terrible Tripod Adapter. EXCELLENT BUY! Great Product Value I think ours was built in a hurry. Great Binos, but they are too much power for casual, hassle-free observing. |
![]() Bushnell Powerview 10x32 Compact Folding Binocular List Price: Sale Price: $26.37 You save: $14.58 (36%) Eligible for free shipping!Availability: Usually ships in 24 hours Average Rating: ![]() DescriptionTravelers, nature observers and concert goers take note: the PowerView series offers the largest line of Bushnell quality, affordable binoculars. No matter what your purpose, you'll find a variety of magnifications, styles and sizes, and fully coated optics for bright, vivid images. The porro prism line-up provides great durability and performance in an attractive "traditional" porro prism design. Compact to full-sized, the contemporary styling houses fully coated optics. Suffice to say, images are crisp, clear and bright - even in low light. Affordable for any and all interested in magnifying life to its fullest. This compact binocular is fully loaded with features that will satisfy all your observing needs. Weighing less than 1 pound, you can take it anywhere. The powerful 10x magnification with center-focus system makes viewing simple and easy to adjust. The fully coated lens makes viewing crisp and the fold-down eyecups keep the lenses protected from the elements. Features
ReviewsI can see! I can see! Nice for the price. Good size Great for nature bushnell powerview 10x32 compact folding binocular Pretty Bad |
![]() Bushnell H2O 10x42 Porro Prism Waterproof/Fogproof Binocular List Price: Sale Price: $69.98 You save: $53.97 (44%) Eligible for free shipping!Availability: Usually ships in 24 hours Average Rating: ![]() Description10 X 42mm Compact & Durable Waterproof Design Is O-ring Sealed & Nitrogen-purged For 100% Reliable, Fog-free Performance Large Center Focus Knob For Easy, Precise Adjustments Non-slip Rubber Armor Absorbs Shock While Providing A Firm Grip Fold-down Eyecups Spend enough time in the water, and chances are your equipment will spend some time in it. That's why Bushnell had the foresight to build the H2O series of binoculars, which are O-ring-sealed and nitrogen-purged to completely lock out moisture should you spill water on the housing, take your binoculars overboard, or simply run into foul weather along the way. The H2O binoculars feature rubber armoring with textured pads to give you a sturdy grip in slippery situations. More significantly, the binoculars' multicoated optics and premium-quality BaK-4 prism glass maximize light transmission and image clarity, so you can enjoy a clear view of the Orcas in the distance or the fast-approaching coastline. You'll quickly see how a little planning on Bushnell's part goes a long way in magnifying your adventures on or around the water. Other features include twist-up eyecups, a large center focus knob, and long eye relief. Specifications: Magnification: 10x Objective lens diameter: 42mm Lens coating: Multi Field of view @ 1,000 yards: 346 feet Adaptable to tripod: Yes Eyecups: Twist up Eye relief: 16mm Focus system: Center Exit pupil: 4.2mm Prism glass: BaK-4 Prism system: Porro Waterproof/fogproof: Yes Weight: 27 ounces Size class: Standard Warranty: Limited lifetime About Bushnell Bushnell has been the industry leader in high-performance sports optics for more than 50 years. The company's guiding principle is to provide the highest quality, most reliable, and most affordable sports optics products on the market. Bushnell product lines enhance the enjoyment of every outdoor pursuit, including nature study, hunting, fishing, birding, and stargazing. Indoors, the company's binoculars bring the audience closer to the action in fast-moving sports or the fine arts at theaters and concerts. Features
ReviewsGreat View Gift for a friend. Birthday Binoculars Not Impressed Great for the Price |
![]() Tasco Essentials 8x21 Binocular (Black) List Price: Sale Price: $10.40 You save: $4.55 (30%) Eligible for free shipping!Availability: Usually ships in 2-3 business days Average Rating: ![]() DescriptionUltra-light binoculars offer outstanding compact performance with rugged, rubber armor ideal for hiking, backpacking or bicycling. Features fully coated optics for brightness, 8X magnification with 21mm objective lens, rubber fold-down eyecups for eye relief. Designed to fold down into itself to become even more compact. Includes carrying case. Limited lifetime warranty. Features
ReviewsGREAT BINOCULARS FOR A LITTLE MONEY Work perfectly, smell bad poor optics alignment Fits the bill Fun and small |
![]() NIKON 7294 Monarch ATB 8x42 Binocular List Price: Sale Price: $279.95 You save: $141.00 (33%) Eligible for free shipping!Availability: Usually ships in 24 hours Average Rating: ![]() DescriptionAmerica's best selling birding binocular is getting even better. The 2010 Monarch All Terrain Binocular now features dielectric high-reflective multilayer prism coating for brighter, sharper colors, crisp and drastically improved low-light performance. A new body style provides unparalleled strength and ruggedness in a package that is comfortable to carry all day Features
ReviewsLike them but don't love them (yet) Animal watching Disappointed... 8 x 42 Monarch binoculars Well Made Binoculars |

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