by William Herschel.

Frederick William Herschel was also a classical composer and musician, the first chairman of the Royal Astronomical Society of Britain, the French Academy of Sciences, and he used his own large reflective telescope to discover Neptune and its two moons, Saturn¡¯s two moons, the sun¡¯s space movement, the infrared radiation in the sun¡¯s light; to compile the first binary star and polymorphs, to publish clusters and clouds; and to study the structure of the galaxy.

Herschel¡¯s contribution to the astronomical telescope was unparalleled, and he was also the astronomer who made the telescope. Since 1773, he has been self-molding the lens for half a century. It was an extremely dull and burdensome work to add wisdom, to brush a hard copper plate into the prescribed extremely glossy, surface mistake is many times smaller than the hair, and the middle of the journey can not be stopped, its difficulty can be imagined. So sometimes he had to dry for more than 10 hours continuously, only by his sister when eating to feed him, and at the beginning he even failed 200 times, so that his brother finally lost patience, wounded away from him, until 1774 he tasted the joy of victory, making a 15cm, 1.5m long telescope,

The Herschel family can be called an astronomical family. His sister Caroline Herschel is also a great woman. She was unmarried and spent 50 years with her brother day and night. She also contributed to many of Herschel's discoveries. She also made many achievements alone: she discovered 14 nebulae and 8 comets, revised the star catalog, added 561 stars, and died at the age of 98 in 1848.

Herschel's only son, John Herschel, was also one of the founders of the Royal Astronomical Society of England, discovered 3,347 pairs of twins, discovered 525 clusters of stars, recorded 68948 stars in the southern sky, and the Astronomical Report, written in 1849, was the best summary of astronomy at the time, and had a profound impact on the whole world.