I heard that the North Pole is a triple star, so can you tell it with an ordinary astronomical teles

Companion of the North Star].

More than 200 years ago, astronomer Herschel discovered that Polaris has a bright companion star, "Polaris B", which has an average straight-line distance of 2,400 astronomical units (one astronomical unit is the distance from the Earth to the Sun, about 100 million kilometers). More than half a century ago, astronomers speculated from the gravitational fluctuations of Polaris that it had another companion star that was very close to each other, and together with "Polaris B", it formed a three-star system. But the companion star was never observed because it was too close to Polaris and its light was too dim.

Nancy Evans and others of the Smithsonian Astrophysics Center at Harvard in the United States, with the help of advanced mapping cameras on the "Hubble" telescope, observed this mysterious companion star for the first time in August 2005. They discovered that the companion star was one astronomical unit away from Polaris on average in a straight line. Observing the distance between Polaris and Polaris AB on Earth is like distinguishing a coin from 30 kilometers away, which only the advanced mapping camera of the Hubble space telescope can do.

Astronomers have also discovered that Polaris is a supergiant with an active internal energy reaction, more than 2,000 times brighter than the Sun, and that "Polaris AB" is a dwarf that is trending into silence. As a result, its light is always overshadowed by Polaris, becoming a "stealth companion", and this time its stealth state is seen through by "Hubble".

This is the encyclopedic explanation, which looks a bit like Sirius, and the existence of his 2 companion stars must be determined by spectral analysis.

More than 400 light years, how easy to see.

The star in the sky is most familiar to people than the North Star. In a clear night sky, when you look up at the sky, the brightest star in the sky is the North Star. Polaris is a star that can be observed by humans with the naked eyeHowever, observing the North Star with an astronomical telescope is naturally also visible.

1. Look for Polaris: The brightest star in the night sky is Polaris, which is a second-magnitude star in the universe. In life, when we are in a certain place, if we want to quickly find the specific position of the North Star, we must first analyze which side of the North Pole is in our place. Once we know where our north side is, we can look in the direction of the north, and the brightest star in the sky at this time is the North Star.

In addition, when we get lost, we can also use the North Star to determine our bearings. We can look for the brightest star in the sky, and after we are sure that the star is the North Star at that moment, then we can determine which direction is north. In addition to this, we can also tell which star is the North Star by the arrangement of the Big Dipper in the sky.

Because the brightness of the Big Dipper in the night sky is a little brighter than that of other stars, and their arrangement is also very regular and characteristic.

2. Astronomical telescope to see Polaris Polaris is a star that humans can see with the naked eye, and when we use astronomical telescopes to observe Polaris, we will find that the Polaris observed at this time is almost no different from the Polaris observed by our naked eyes. To be precise, if you look at Polaris through an astronomical telescope, you won't see the details of the star, but you will only find that the star is larger than the one you can see with the naked eye. This is because Polaris, as a star in the universe, is very far away from Earth.

3. ConclusionPolaris is the brightest star in the earth's night sky, and we can see Polaris with astronomical telescopes.

OK. Because Polaris is relatively close to Earth and is so bright that it can be seen directly with the naked eye, it can be observed with an astronomical telescope.

The North Star can be observed with an astronomical telescope. Polaris is a fairly well-known constellation, and it is very easy to observe and can be observed with an astronomical telescope.

Polaris is the closest star to the North Pole, and the Earth's axis of rotation is always pointing at it, so its position barely moves, but it is too far away for us to observe with a telescope.

Civilian telescopes can observe targets such as planets (with details), open clusters, nebulae, etc., but stars are only a small point of light in the telescope without any details.