1. Italian scientist Galileo first used a homemade telescope capable of 30 times magnification to view the Moon's strange craters and discovered Jupiter's four large satellites. Like an ordinary telescope, an astronomical telescope can bring distant landscapes into the eyes of the observer.
2. Wonderful phenomena that had never been observed before, such as sunspots, the waxing and waning of Venus, and the dense stars of the Milky Way, were rapidly developed. Astronomy telescopes are not only much larger than telescopes, but also much more sophisticated. Catadioptric telescope of modern astronomical (optical) telescope.
A telescope is an optical receiving device. This type of device can see regardless of the distance.
For example, with the naked eye we can see the Andromeda Galaxy 2.2 million light years away, but wes can't see many asteroids in the solar system. Can you tell me how far the naked eye can see. ? I'm afraid not, so don't disturb the telescope.
The main parameters for evaluating telescopes are resolution and limiting magnitude. These two parameters are theoretically determined by the aperture. For comparison models, such as 7*50, the limiting magnitude under ideal observing conditions is around 11. This brightness is no longer suitable for counting. 110 Messier objects can be observed with small binoculars around 100 . In addition, the binoculars have a large field of view, are upright, and can be easily adjusted in position, which is beneficial for deep space observation and beginners.
However, the magnification is limited, and for the planet it is essentially a point of light. Saturn's rings can be seen theoretically, but in reality it does notIt is not certain that they are simply a figment of the imagination. And any Tianwang who does not draw a clear line between toys and toys can easily find Saturn's rings.