William herschel

Pre 1900

Who is William Herschel?

Herschel became interested in astronomy in 1773, and after constructing his first large telescope in 1774, he spent nine years researching the sky's

Dates of discoveries:




In March 1781, during his search for double stars, Herschel noticed an object appearing as a nonstellar disk.Herschel originally thought it was a comet or a star. He made many more observations.He called the new planet the Georgium sidus named after George the 3rd ,In France the planet was known as 'Herschel' until the name 'Uranus' was universally adopted.


infrared was discovered in 1800 by Sir Frederick William Herschel. herschel decided to investigate the temperature of each color of the spectrum produced when sunlight is passed through a prism.

Double stars:

Herschel's early observational work soon focused on the search for pairs of stars that were very close together visually. Astronomers of the era expected that changes over time in the possible separation Of the stars

William Herschel telescope:

At the time of construction in 1987, the WHT was the third largest largest in the world. It is currently the second largest in Europe.

Technologies used:

William Herschel telescope

Night sky