What is the type of telescope that can clearly see people a kilometer away, and how much does it cos

Hello, 1 km, when the weather is good, you can see that it is a human without a telescope, of course, it is just a point, like this: "So if you want to be accurate, you have to add your question, that is, to what extent does this person see? Can you tell if it's a man or a woman?

Or can you see the face? - Let's say you're asking about seeing faces, that is, who is this person, and at 1 kilometer, you can tell who it is. So your question for this supplement:

Oh, your requirements are not high, but hand-held telescopes, I'm afraid I can't reach it, because hand-held telescopes, magnification is 7 10 times (not the bigger the better, the military handheld is 7 times 8 times), speaking of which, you have to pay attention to this, handheld telescopes are now fake and inferior many, like to claim 20 times, 50 times, 9999 times - all deceitful, what else "Russia" "cherry blossoms" and "infrared night vision" are also common false propaganda of inferior products, you can take a look.

Introduction to the basics.

That is, the hand-held one can give you - under ideal conditions, assuming there is no fog in the air or something, it is equivalent to zooming in to about 120 meters. At this distance, it is more difficult to look at people's faces.

If it is a desktop high-power viewing scope, it can basically meet your requirements, for example, using 25 times, it can shorten the distance to 40 meters, at this time, you can already distinguish the basic difference between men and women, or use 35 times, you can zoom in to about 25 meters, and you can almost see the face clearly at this time.

But it should be noted that because of the atmospheric environment, especially the air near the ground, the air in the city, basically looking at the target at a distance of 5 kilometers - nothing can be seen, just a blank patch.

The use of telescopes, although it is said to shorten the distance, but if the air is not good, it will also condense the fog! The larger the multiplier, the more it should be in a good environment, like 35 times, I told you. Theoretically, you can see it, but in reality, because of the 1 kilometer thick turbid air close to the ground, basically 35 times more used, the effect is very much reduced.

It's not good for looking at the ground. It doesn't matter if you look at the moon, because looking at the sky, the atmosphere above is much cleaner than the air on the ground, and there is very little fog and dust.

The bad ones are a few thousand, and the good ones are tens of thousands ......

Summary. Dear, I'm glad to answer your <>

Telescopes can generally see more than 60-1000 meters. Ordinary telescopes have an effective distance of 60-1000 meters or more1The distance of the telescope is related to the person's eyesight

For example, when the letter E on the eye chart is tested at a distance of 5 meters, a person with good vision can see the bottom row, while a person with a nearsighted eye may only be able to see the upper few lines of EIf you put the eye chart 50 meters away and look at it with a 10x telescope, it is equivalent to 10 times closer, <>

How many kilometers can a telescope typically see?

Dear, I'm glad to answer your <>

Telescopes can generally see more than 60-1000 meters. Ordinary telescopes have an effective distance of 60-1000 meters or more1The distance of the telescope is related to the person's eyesight

For example, when the letter E on the eye chart is tested at a distance of 5 meters, a person with good vision can see the bottom row, while a person with a nearsighted eye may only be able to see the upper few lines of EIf you put the eye chart 50 meters away and look at it with a 10x telescope, it is equivalent to 10 times closer, <>

Kiss and expand your <>

Generally speaking, ordinary binoculars, the multiples are more than 7-10 times, generally not more than 12 times, If the multiples are higher, they will shake when they are held, which will affect the observation effect, and the 10 times telescope will look at the scenery at 100 meters, which is equivalent to 10 meters closer to the eyes of the naked eye, and the feeling of the naked eye should not exceed 10 times, because there will be a slight shake when holding the telescope. The higher the multiple, the bigger the shake, and there is no way for the human eye to see clearly an object that shakes violently<>

A telescope of 300 25 does not increase the distance seen, but magnifies the image seen by the naked eye, i.e., the distance seen by the telescope or the distance seen by the naked eye, but the details are magnified.

First of all, the question "how far can a telescope see" is wrong. Because our naked eye is an optical instrument, the naked eye can see the Great Nebula Andromeda 2.54 million light-years away.

But the closest solar system to Earth is not visible.

The outer star Proxima Centauri.

light years). The distance that the telescope sees is related to the size of the object. For example, if there is an ant at 1000 meters, with a 10x telescope, it is equivalent to pulling the ant closer to 100 meters, and you will definitely not see it.

If you are a person at 1000 meters, you use a telescope 10 times, which is equivalent to pulling a person closer to 100 meters to see, you must see very clearly. With a telescope, you can clearly see the crater of the moon at a distance of 380,000 kilometers.

But we can't see the Earth's satellite, which is much closer to us, and that's the reason.

The principle of magnification of a telescope

The first role of a telescope is to magnify the opening angle of a distant object.

Enables the human eye to see details with smaller angular spacing. The second function of the telescope is to collect the objective lens into a beam of light that is much thicker than the diameter of the pupil (up to 8 mm) and send it into the human eye, so that the observer can see the faint objects that cannot be seen before.

Therefore, in fact, the telescope has no distance limit, it is to achieve the effect of bringing the scene closer. For example, an eye chart.

When the letter "e" is placed at a distance of 5 meters, people with good eyesight can see the bottom line, myopia.

may only see the first few lines of the big "e".

If you put the eye chart 50 meters away, using a 10x telescope is equivalent to closing it 10 times (the same as 5 meters away). People with good eyesight can still see the bottom row, while people with nearsightedness can still only see the big "e" in the front row, and the bottom is still not clear.

Telescopes don't have a concept of how far they can see or how clearly they can see. An 8x telescope, as long as it is designed in accordance with the rules of optics, when observing a distant target through it, the angle of view of the target's image is magnified by 8 times, so that the target appears as if the distance has become 1 8 of the actual distance.

Observing a person at a distance of 100 meters with an 8x telescope makes the subjective feeling in the field of view feel like observing a person with the naked eye at a distance of only one meter.

500x80 is a standard marking method for telescope specifications, and its format is generally a multiple of the telescope's objective aperture, which is an important indicator when selecting a telescope. In addition, the telescope may also be marked with a field of view n 1000 m, which means that an object n far away can be placed in the field of view at a distance of 1000 meters.

Telescope specifications and models

For example, 7x35 indicates that the mirror is 7x, and the objective lens aperture is 35mm.

The representation method of a continuous zoom telescope, 8-24x40, indicates that the magnification of the mirror can be continuously varied from 8x to 24x, with an aperture of 40mm.

The representation method of the variable magnification telescope, 30+60x70, indicates that there are two kinds of magnifications, 30 times and 60 times, and the aperture is 70mm.

But for astronomical telescopes.

It is customary to use aperture and focal length to express specifications, such as 80 600, or 80f600, which means that the objective lens aperture is 80mm and the objective focal length is 600mm.

Astronomical telescopes can also be directly marked with apertures, such as 80mm, 102mm, 127mm, 153mm, etc., or according to the imperial system: 4 inches, 6 inches, 8 inches, 10 inches, 12 inches, etc.

The telescope didn't look far. Depending on the resolution and aperture, it can be said that the telescope can see how far away the object is in detail. For example, an astronomical telescope with a resolution of arc seconds can resolve details on the moon up to 180 meters in size.

The ordinary astronomical mirror is also called the universal astronomical telescope, which varies from 200 to 1000 away, and has a variety of classifications such as refractor and reflector, with a magnification of about 15-70. A good telescope, a little more professional, due to the addition of equipment such as the equatorial mount, the lens is well-made, so it is much higher, 2000 to tens of thousands are possible, and the magnification is about 20-150.

Hello dear and happy to answer for you. How many meters can the best telescope see, kiss hello, for you to find out. The best telescopes can see 2000 3000 meters, ordinary binoculars are generally about 500 meters, general military binoculars or advanced telescopes can generally see about 1000-1500 meters, astronomical telescopes can generally see stars within the solar system, space telescopes can see 13 billion light years away, which is currently the world's farthest observation distance with a virtual telescope slow branch.

The above is the answer of the respondent, I hope it can help you. I wish you a happy, healthy, and prosperous life.