Do you understand the various uses of a telescope?Apexeloptic
The telescope collects light from an object and sends it along its focal plane to present the observer with a realistic image of the object. Telescopes help photographers, stargazers, and astronomers find details of objects that are too far away to be seen with the naked eye.
Optical telescopes fall into three categories: refractor telescopes that use lenses, reflective telescopes that use mirrors, and reflective refractor telescopes that use mirrors with lens designs. But do you understand the various uses of a telescope? Don’t understand with the chief editor to understand it.
The various uses of the telescope
1. Birdwatching telescope
For bird-watchers, the multiple of the telescope should be slightly higher, usually 8-10 times, with a diameter of 30-42mm and an exit pupil size of 4-6mm. On the one hand, sometimes migratory birds will be in the shade, so the exit pupil should not be too small. On the other hand, the heavy hand weight is not conducive to long-term observation, so we should pay more attention to the weight. Therefore, binoculars for bird watching abroad mainly have 8× 32,8 × 40,10 ×42 (600-750g) and other specifications.
In addition, binoculars for bird watching also have some additional performance that is more important, such as the latest focusing distance, fast focusing, and so on. In most cases, binoculars will work better with a spotting scope that can be mounted on a tripod. For domestic bird-watching enthusiasts, it is recommended to use 8×42 or 10×42 binoculars +460 single tube (don’t forget the bracket), the price is very good, bird-watching binoculars is the most famous is Baobao Bird-watching 221042.
2. Stargazing telescope
Casual stargazers use optical telescopes to see the universe up close. If you see a telescope on a tripod in someone’s home, it’s probably a refractor, because they’re among the most compact optical telescopes. The SpyGlass or handheld refractor was one of the earliest optical telescopes. Astronomers Galileo Galilei and Johannes Kepler refined the telescope’s design at the turn of the 17th century, and today amateur astronomers use refraction telescopes to study the sky — or spy on their neighbors across the street.
3. Travel telescope
For general outdoor tourists, overall performance and weight can consider 8× 32,7 ×35 model. If very care about the weight, can consider roofing prism product, such as 8 x 25, if you only need to use in bright light, you can have a more sophisticated 8 x 20 telescope, after folding volume is very small, can be put into your pocket, the disadvantage is that the eyepiece and an exit pupil diameter, an exit pupil distance are small, poor observation comfort, this is looking at comfortable uncomfortable, It’s the opposite of 7 times 50.
Currently, there are 10X25 and 8X25 travel telescopes on the market, which generally have a small field of vision and small exit pupil distance. Therefore, it is generally recommended to choose 10X28, 8X32 caliber.
4. Concert binoculars
For big shows, football matches, etc., you need a telescope with a lower multiplier and a larger field of view. High-powered binoculars can help you see the faces of the actors and players, but the range is so small that running after the ball is exhausting. As a concert telescope, the Apexel RB10X42A binoculars are undoubtedly the best choice.
Photographers sometimes use optical telescope cameras with refractive-reflecting lenses. Refraction telescopes use both mirrors and lenses, but can be easily folded up and carried around. Some people even put an optical telescope lens on their iPhones so they can zoom in on the target for close-up shots. Many zoom cameras are essentially optical telescopes because the mechanism behind many camera zoom lenses is the same as that behind optical telescopes — and both have the same job of magnifying distant objects.
6. Scenic viewing telescope
Generally, the scenic spot observation telescope is used more scanning code coin-operated telescope, after all, in addition to giving tourists a different visual experience to earn a small number of operating costs is also a win-win situation.
7. Navigation telescope
A telescope is also needed during navigation, after all, the existence of a telescope can avoid many accidents. Sailing need to select excellent waterproof performance and high sealing telescope, prevent rainwater infiltration or cold weather in the lens of fog and dust caused by bad to use for a long time to enter, but nitrogen inflator waterproof can fundamentally solve the problem, and some, not nitrogen filling sealing actual military telescope is also very good, as long as it doesn’t soak into the water, The general rain snow wind sand or can deal with. When sailing, it is better to carry a telescope with a built-in compass to adapt to the navigation process.
8. Military telescopes
Telescopes are used in the military and police fields to survey terrain and observe enemy movements. In many Anti-Japanese War TV dramas, there will be some commanders, using telescopes to observe the enemy, to facilitate better command action; Telescopes can be used to track retreating enemy troops, allowing for better operational planning.
These are the fields most telescopes are involved in, of course, water conservancy, railway, and other fields will also use the telescope, so the application of the telescope is relatively wide, but ordinary people rarely notice it. By the end of this article, I believe you have a certain understanding of the purpose of the telescope, and I hope you can buy your telescope.