Sir Frederick William Herschel (English: Frederick William Herschel, born: 15 November 1834, died: 25 August 1822) was a German astronomer and composer born in Germany. At the age of 19, he left Germany and settled in Britain. He was the one who discovered the planet Uranus. It was the first planet identified by the telescope. He additionally discovered two satellites of Uranus and two satellites of Saturn. Although he is best known for his astronomical activities, he also wrote 24 musical pieces during his lifetime.
Born in Hannover's constituency, Herschel followed his father as his successor in Hannover's military band, before emigrating to Great Britain in 1757 at the age of nineteen.
Herschel had greatly increased the number of known nebulae. In Messier's famous list of 100, Carolyn surpassed 5000 and Herschel surpassed 1820. His idea that the nebulae are just a gathering of distant stars, which we call the Milky Way today, was more than a century ahead of its time. Herschel realized that Mandakini is the bottom of a spiral stellar universe. He outlined this by counting the number of stars appearing in different directions. He called this stellar scheme 'the creation of the sky'.
Herschel pioneered the use of astronomical spectrophotometry as a diagnostic tool and used prisms and thermometer equipment to measure the wavelength distribution of the stellar spectrum. His other works include: improving the determination of Mars' rotation period, the search for weather variations on the polar caps of Mars, the discovery of Titania and Oberon, the satellites of Uranus, and the discovery of Saturn's satellites Ancelades and Minas.
The largest infrared telescope ever installed in space by the European Space Agency in May 2009 has been named the Herschel Space Observatory in Herschel's memory. The insignia of the planet Uranus is on the first letter of Herschel's surname. A crater on the moon and a valley of Mars are named after him, while '2000 Herschel' is an asteroid. Apart from this, the names of schools, colleges, buildings, parks, museums, cities, streets and binoculars have also been named in Herschel's memory.
Herschel's binoculars
During his career, he built over four hundred telescopes. The largest and most famous of these was the 49ยบ 1 "2-inch-diameter (1.26 m) primary mirror and the reflecting telescope with a 40-foot (12 m) focal length. Due to the poor reflectivity of the support mirror of that day, Herschel called his The design eliminated the small diagonal mirror of a standard Newtonian reflector and tilted its primary mirror so that it could directly see the image it created. This design came to be called the Herschelian telescope In 1789, shortly after the operation of this instrument, he discovered a new moon of Saturn: Mimas, only 250 miles in diameter. A second moon followed within the first month of observation. "40 Foot Telescope "Proved to be very cumbersome, and most of his observations were a short 18.5-inch (47-centimeter) 20-foot-focal length (6. 1 m) with reflector. Herschel discovered that unfielded binocular apertures could be used to achieve high angular resolution, which became the necessary basis for interferometric imaging (especially aperture masking interferometry and hyperteloscopes) in astronomy.
Special work
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