What is the difference between looking at the night sky with a telescope and looking at the night sk

The telescope is used for two purposes at night, one is to zoom in, which is the basic ability of the telescope, to magnify the target, to pull the catalog closer to your eyes, as often said telescope multiple, that is, to approach the target to how many times, such as 7 * 50 specifications, that is, you can close your target to 1/7 of the original than the naked eye observation.

But this is not obvious when looking at the starry sky, unless it is effective when looking at the moon or other planets in the solar system, looking at the stars, no matter how you look at it, it is a "point", because it is too far away, it is just a point light source!

Another important use is to increase brightness, the diameter of the objective lens of the telescope is much larger than the pupil of the human eye, which means that it can collect more light! So it will allow you to see dark stars that are invisible to the naked eye, in fact, in deep space observation, this is the most important, and the magnification effect is secondary! But it's not that you can't do without!

When you observe the night sky with a large-aperture telescope at night, you will see a lot of stars that are invisible to the naked eye! This is the main purpose, of course, the magnification of the telescope allows you to distinguish between star clusters or binary stars that are not visible from the inside!

There is no essential difference, the telescope has a small field of view, locking on a small area of the sky, and the naked eye can see more than half of the sky. Telescopes typically collect light more than 100 times more than the naked eye, magnifying objects by 40 to 200 times, allowing them to see more detail and see fainter objects.

That's a big difference, of course! Do you see the crater on the moon with your eyes? You can see it with a telescope.

The telescope can also see the waxing and waning of Venus (that is, the waxing and waning like the moon), the "wood grain" of Jupiter, and the four Galilean moons, which are obviously a string of beautiful rings of Saturn. If the observation conditions are good, it mainly means that there is little light pollution, and you can see some beautiful nebulae. Such as the Great Nebula in Andromeda.

However, there are drawbacks to telescopes. I just can't see the beautiful constellations. It can only be viewed individually.

Night vision binoculars can be seen at night. Ordinary telescopes are invisible at night.

Night vision binoculars, also known as night vision goggles, are commonly known and officially called"Night vision"。It is an instrument that can be used for observation in total darkness or in low-light environments. According to the different imaging principles, the general common ones are divided into:"Low-light night vision"with"Infrared night vision"。

Night vision devices were first used in the military.

Infrared vision can help people observe, search, target, and drive vehicles at night. In an extremely dim environment, the low-light night vision device enhances the weak natural light to the extent that it is recognizable to the naked eye by concentrating light or artificial gain, so as to achieve the night vision effect. The green night vision images that we commonly see in movies or television are artificially gained, low-light night vision images.

A telescope is like a human eye. At night, the maximum pupil of a person is 7 mm. If the diameter of the telescope objective lens is 80 mm, then the light collection power = 80 square 7 square = 130, that is, as long as there is light, the light gathering capacity of the telescope 80 is 130 times that of the human eye.

If a photoelectric conversion device is placed between the objective lens and the eyepiece of the telescope, it is a low-light night vision device, and the sensitivity is greatly improved.

Depending on what telescope you are carrying, there are telescopes with night vision.

You can use night vision lenses, which are the yellow lenses.

If it's an astronomical telescope, it's OK

I can't see clearly, but it's still okay if there's a bright place.