HerschelTelescope

Autor:

Mike Young

Credit:

Praca własna

Krótki link:

https://plwiki.pl/b/cc10

źródło:

Wikimedia Commons

Wymiary:

1493 x 1914 Pixel (262586 Bytes)

Opis:

Model of Telescope with which William Herschel discovered Uranus. In the Herschel Museum of Astronomy in Bath. The secret of Herschel's success as an observer was the power and magnification of his telescopes. This seven foot long, six inch diameter, ƒ14 reflector was particularly favoured. Its main mirror at the bottom of the tube and the secondary mirror near the top in front of the ocular were made of speculum metal. It was with a seven foot telescope that Herschel made the discovery of the planet Uranus in 1781

Licencja:

Public domain