Binoculars are telescopes mounted side-by-side and aligned to the same point, allowing viewer to see distant objects clearly. Most of them are designed in such a way as to be held in both the hands.
They are used to widely in various fields like astronomy, wildlife and birds watching, sports or simply gazing at the sky on a winter night. Each one of them is specifically designed for specific purposes. So let’s see few points to be kept in mind before you buy one for yourself http://www.nightvisionoptic.com/.
Magnification: the magnification of lens varies largely. You must choose the one you need. For astronomical purposes you will need a higher magnifier lens whereas for wildlife observation a little lesser would be preferred.
Brightness: lenses come in different levels of brightness. How do you know the brightness level? Divide the diameter of the objective lens by magnification; this indicates the brightness of the lens.
Weight and size: the quality of the lens and weight of the lens go hand in hand. The more the weight betters the quality. But for older people carrying a heavier lens would not be preferred. Few companies have come out with lighter weight, but specifically for wildlife watching the lighter weight reduces its clarity of magnifying. For other purposes you may consider the light weight lens.
Field of view: this is nothing but the wideness of the lens. (Editors’ Choice) Best Astronomy Binoculars This makes following a moving object easier. A lesser magnification lens provides a better field of view.
Close focus and price are other parameters to be noted.
After many reviews from people across the globe, here we list the best brands:
* Swarovski EL
* Vanguard Spirit ED
* Vortex Diamondback
Each of them is perfect for specified task, like bird watching, wildlife watching, astronomy etc.
So this is your first binocular, and you are buying for astronomical purpose. We shall help you in selecting a better one.
Binoculars come in 2 types, porro- prisms and roof-prism binocular. Best Value For Money Binoculars Porro prisms are the mostly preferred ones. Here the objective lens and eyepiece are offset. For astronomical purpose you need to avoid the ones with a built in camera and zooming feature, you don’t use them.
* Pick up a binocular and look for lenses with anti-reflection coating. It’ll mostly appear dark. If it appears white or ruby red, do not buy them.
* See from the prism side of the lens, it should have a colored surface. If it’s white, then there is no Anti –reflection coating, not good option.
* Holding the eyepiece towards your face, look at the bright disk of the exit pupil. If the disk appears round, it means that the glass is of high quality. If the disk appears square, it means the glass is of low quality, not suitable for astronomy.
So for daytime viewing you don’t need a high grade binocular, universal binocular tripod mount since ample of light is already there. For casual night time viewing you may buy a starting economical range of binoculars, as they don’t require high end ones.