วันเสาร์ที่ 6 กุมภาพันธ์ พ.ศ. 2553

Binoculars - Choosing a telescope and know why


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The choice of binoculars can be a tricky task since there are so many kinds of binoculars out there. What do all these technical terms? Let's find out.

Binoculars are great tools that can improve the variety of activities such as hunting, bird watching, sport and even astronomy. In essence, a telescope takes a distant image, enlarge it through his lens and the image presented for our consideration. All this happens while remaining small andcompact enough to be worn.

The architecture of a real most binoculars is fairly straightforward. The lenses are positioned at the end of the barrel is often known to be the goal. These lenses to collect light from a distant image, and focused on the lenses are more likely to eye on an ad. Binoculars are really just two small telescopes placed side by side, so that the display can be used both eyes done only as a contrast. This contributes to a depth of field to createObjects that are much better than if a single area.

If you select a pair of binoculars, you find that there are usually two numbers that describe them. This is often something like "10x50" or similarly described. Let's translate those numbers to something more meaningful.

The first number refers only to the magnification of the binoculars or simply said, how many times the image is enlarged. So if this number is 10, this meansthat the image you see, was amplified by the lens 10 times its normal size.

The second number is the size of the lens at the end of the binoculars are connected. This number is very important to take note of this, because a larger diameter lens means that more light will be recorded by the binoculars.

How do all this information? Most people assume that it's better, the maximum magnification they receive for their Binoculars. This is not right. A hand-binoculars with high magnification tends to have too much movement for the highly magnified image to be useful. Usually, a pair of binoculars, which was little more than 10 times magnification are held on a tripod, instead of being mounted. So if you plan to use binoculars without a tripod, you should stick to the 4-8x magnification range.

We talked about the size of the lens> Binocular earlier. If the activities that require you to play with your telescope is a situation of low light, ie at night or in dimly lit situations, whether inside or outside, you must be a bigger target for binoculars. In general, 30mm and above for low light situations needed to ensure that these operations are, as much light as possible.

The last thing you would need to consider is the actual weight of the binoculars you buy. ForActivities such as hiking, or hunting, it's probably better to buy a pair of lightweight binoculars. Plastic lenses that weigh much less than their glass counterparts, may be the solution. The disadvantage is that the glass lenses much better performance at the same cost, but are heavy and fragile.

Would be short, you have, what activities should be more likely to look through the binoculars at the time of choosing the right binoculars. The magnification and the lensare important, but it is also possible for you, the raincoat, which, depending on needs. A pair of expensive binoculars usually robust and can withstand a long-term use.

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