The man who invented the telescope was the famous Galileo. Galileo was a versatile artist who created the first telescope. Galileo invented the telescope, which was the first folding telescope. In order to test Copernicus' theory, Galileo made such an invention and took the lead in observing the stars in the sky with a telescope. Galileo not only saw sunspots, observed craters on the moon, but also discovered four larger stars of Jupiter, which are still named Galileo satellites, making great contributions to astronomy.
Galileo made a telescope with a magnification of 3 times in early July of 1609, and a telescope with a magnification of 20 times in October of 1609+065438+ 10, and found craters on the surface of the moon. Therefore, Galileo was the inventor of the "astronomical telescope". 16 10 In September, he wrote to Kepler that he had increased the magnification of the telescope to 32 times (its actual magnification should be 33, with a diameter of 4.4 cm).