Binoculars – Purchasing And Care
Of all the optical instruments, binoculars are widely used by travelers, sports fans, fisherman and hunters.
Binoculars are mounted side by side and aligned to point with accuracy in the same direction. Unlike the single lens telescope, binoculars or binocular telescopes, allows the viewer a greater sense of distance and depth. Binoculars give the users an apparently 3D image.
Binoculars are so designed that the focal length of the lenses is less than is physical length. Larger binoculars can not be held steady hence they are mounted on a support such as tripod. The Large Binocular Telescope, known as LBT is located in Arizona and it produced the First Light image from outer space in October 26, 2005.
Coin operated binoculars which are mounted on a pedestal are found in popular tourism spots to help the tourists get a closer view of the sights. By dropping one or two quarters in it, it permits the use of the binoculars for 2 to 3 minutes
A good binocular should produce two sharp images which are uniform, each image having excellent quality, free from geometrical errors or internal reflections and color corrections. Both the images right and left should be identical without any variation in orientation, aberrations and size.
The magnifying power of the binoculars is referred as 7X or 8X which means the object will be magnified 7 or 8 times of its original size. Some binoculars have magnifying capacity in varying degrees. The term 7-21X means starting with 7 times magnification it can reach up to a magnifying power of 21 times. Most commonly used magnifying powers of binoculars are from 6X to 10X increasing in steps of 1.
A good quality binocular can be identified by the popularity and fame of the brand names. By producing high quality optical products, companies such as Leica, Minolta, Pentax, Zeiss, Celestron, Nikon and Swarovski earned a good reputation. As usual we get what we pay for.
Whilst traveling, select a binocular which is light weight, compact and fits easily into the suitcase or shoulder bag. A compact roof prism binocular perfectly fits the bill as a travel companion.
For the budding astronomer, a very high quality and bright binocular with a power rating of 9X, 8X or 7X is required. Make sure that the binoculars can be held steadily while searching and focusing on objects in the sky.
By keeping the binoculars clean, we can make best use of them and get a longer life from them.
Use compressed air in cans to blow the dust off from the lens. Use lens cleaner and lens cloth to remove the grease and dirt from the lenses. Start the cleaning at the center of the lens and gradually swirl towards the rim. Use a soft bristle toothbrush to clean the crevices of the binocular casing and use a slightly damp cloth to wipe the casing.
About the Author:
Lucy Bartlett is a proud contributing author. Find more articles here. For more info visit Binoculars or Binocular Comparisons
Buy the Best Bird Watching Binoculars Online
Bird Watching Binoculars Magnify Your Sights
By Robin Murray
Bird watching is one of those hobbies that many people from all over the planet enjoy. Most of these bird watchers are everyday people, not scientists. They gain great pleasure from just gazing upon the various and amazing feathered creatures. Many people join bird watching clubs and get together with others in these groups for a day out or even just a few hours of socializing and bird watching. Watching the birds without the aid of binoculars is fine for some people, but most people use binoculars to magnify their sights of the birds and get a closer view of all the birds’ details and colors.
Bird Watching Binoculars For Everybody
There are a vast array of bird watching binoculars that are available on the market to suit everybody’s budget and personal taste. In most circumstances the more expensive the binoculars then the better the quality will be. However, there are quality binoculars available in every price range. Also, there are three sizes of bird watching binoculars available. They are compact or pocket, mid-sized and full-sized binoculars. You can find a great pair in any of these sizes. The smaller ones are easier to carry around with you especially for when you are out in the field searching for birds. The full-sized are great if you are staying in one location or not moving around very much as they can be a little heavy to tote around for long periods. And, size doesn’t necessarily matter in regards to magnification. There are mid-sized models that are more powerful than full-sized ones.
Bird Watching Binoculars – Optics And Features
A very good pair of bird watching binoculars should have bright, clear, sharp, high-contrast images. Many manufacturers make binoculars but it is best to go with a company that has a great reputation. Companies like Pentax, Nikon, Swarovski and Zeiss all offer great bird watching binoculars in addition to all their other optical equipment.
To bird watch at any time of the day, you will find that these manufacturers offer equipment that will be able to show all the details of the birds in bright light and low light conditions whether the birds are flying or stationary. The lenses’ magnification will allow you to see the birds as if you were up close to them. These bird watching binoculars are easy to focus quickly to catch birds in flight, too. The binoculars from these great companies offer superb clarity and true colors with high-contrast images. They feel comfortable in the hand so the avid bird watcher will enjoy using them throughout the day in various areas.
Interested in learning more about birdwatching and bird watching binoculars? Visit http://www.about-birds.info an instructive website that provides birdwatcher advice, tips and resources including information on birdwatching binoculars, clothing, tours and equipment for beginners to experienced birdwatchers.
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