At the same time, the German astronomer Kepler began to study telescopes. He proposed another kind of astronomical telescope in Bending Optics, which consists of two convex lenses. Unlike Galileo's telescope, it has a wider field of vision than galileo telescope. But Kepler didn't make the telescope he introduced.
Development course:
1608, Hans Lippershey, an optician in middelburg, the Netherlands, built the world's first telescope. Once, two children played some scenes in front of Lipper's shop. They looked at the weather vane on the distant church through the front and rear lenses and were in high spirits.
Liporsay picked up two lenses and saw that the weather vane in the distance was greatly enlarged. Lippert ran back to the store and put the two lenses on a spool. After many experiments, Hans Lippert invented the telescope. 1608, he applied for a patent for his telescope, and made a binoculars according to the requirements of the authorities. It is said that dozens of telescope opticians in the town all claimed to have invented the telescope.