Daniel Chalonge

"Chalonge" redirects here. For the lunar crater, see Chalonge (crater).

Daniel Chalonge (January 21, 1895 – November 28, 1977) was a French astronomer and astrophysicist. Born in Grenoble, Chalonge worked as an astronomer at the Observatoire de Paris, the Observatoire d'Haute Provence and the Swiss Jungfraujoch Scientific Station. One of the founders of the Institut d'astrophysique de Paris, his studies included the stellar spectrum of hydrogen, stellar photometry and classification, and measurement of the ozone layer. Chalonge developed a microphotometer, which was subsequently named after him. Between 1936 and 1982 he authored (or co-authored) over 90 scientific papers.

Chalonge died in Paris.

Awards and honors

• The crater Chalonge on the Moon is named after him.
• Chalonge mountain in the Alps is named after him.
• The International School of Astrophysics Daniel Chalonge is named after him.
• The Daniel Chalonge Museum in Erice, Italy is named after him.

External links

• International School of Astrophysics Daniel Chalonge

Persondata
Name	Chalonge, Daniel
Alternative names
Short description
Date of birth	January 21, 1895
Place of birth
Date of death	1975
Place of death