Angelo Secchi S.J. (Italian pronunciation: [ˈandʒelo ˈsekki]; 28 June 1818 – 26 February 1878) was an Italian Catholic priest, astronomer from the Italian...

The Secchi disk (or Secchi disc), as created in 1865 by Angelo Secchi, is a plain white, circular disk 30 cm (12 in) in diameter used to measure water...

Secchi may refer to: Angelo Secchi, Italian astronomer Giuseppe Secchi (1931–2018), Italian footballer Luciano Secchi (born 1939), Italian comic book...

characteristics, and they were first recognized by their spectra by Angelo Secchi in the 1860s, a pioneering time in astronomical spectroscopy. By definition...

who co-founded the Institute of Geobiology with him in Peking. Pietro Angelo Secchi became a Jesuit priest in 1833. He became a professor of astronomy at...

Secchi classes and been progressively modified as understanding improved. During the 1860s and 1870s, pioneering stellar spectroscopist Angelo Secchi...

and embryologist Angelo Sala (1576–1637), Italian physician and chemist Angelo Scalzone (1931–1987), Italian sports shooter Angelo Secchi (1818–1878), Italian...

outer rim of the crater Secchi, the formation from which this range gained its name. This crater is named after Angelo Secchi, a 19th-century Italian...

the 19th century, before modern systems of stellar classification, Angelo Secchi included Betelgeuse as one of the prototypes for his Class III (orange...

of stellar spectroscopy was pioneered by Joseph von Fraunhofer and Angelo Secchi. By comparing the spectra of stars such as Sirius to the Sun, they found...