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Henri Chrétien

 

 
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Henri Chrétien
 
 
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Henri Jacques Chrétien (February 1, 1879, Paris
Paris

Paris is the Capital of France and the country's largest city. It is situated on the river Seine, in northern France, at the heart of the ?le-de-France Regions of France ....
 – February 6, 1956, Washington
Washington

Washington is a U.S. state in the Pacific Northwest region of the United States. Washington was carved out of the western part of Washington Territory which had been ceded by Britain in 1846 by the Oregon Treaty as settlement of the Oregon Boundary Dispute....
) was a French
France

France , officially the French Republic , is a country whose Metropolitan France is located in Western Europe and that also comprises various Overseas departments and territories of France....
 astronomer and an inventor.

Born in Paris
Paris

Paris is the Capital of France and the country's largest city. It is situated on the river Seine, in northern France, at the heart of the ?le-de-France Regions of France ....
, France
France

France , officially the French Republic , is a country whose Metropolitan France is located in Western Europe and that also comprises various Overseas departments and territories of France....
, his most famous invention is the anamorphic widescreen
Widescreen

A widescreen image is a film, computer or television image with a wider and shorter aspect ratio than the standard Academy frame developed during the classical Hollywood cinema era....
 process, that resulted in CinemaScope
CinemaScope

CinemaScope was a widescreen movie format used from 1953 to 1967. Anamorphices allowed the process to project film up to a 2.66:1 Aspect ratio , almost twice as wide as the conventional format of 1.37:1....
, and the co-invention (with George Willis Ritchey
George Willis Ritchey

George Willis Ritchey was an American optician and telescope maker and astronomer born at Tuppers Plains, Ohio.Ritchey was educated as a furniture maker....
) of the Ritchey-Chrétien
Ritchey-Chrétien telescope

The Ritchey-Chr?tien telescope or RCT is a specialized Cassegrain telescope designed to eliminate Coma , thus providing a relatively large field of view as compared to a more conventional configuration....
 type of astronomical telescope
Telescope

A telescope is an instrument designed for the observation of remote objects by the collection of electromagnetic radiation. The first known practically functioning telescopes were invented in the Netherlands at the beginning of the 17th century....
.

He spent part of his early astronomical career at the Nice Observatory
Nice Observatory

The Observatoire de Nice is located in Nice, France on the summit of Mont Gros. The observatory was initiated in 1879 by the banker Rapha?l Bischoffsheim....
.

He was one of the founders of the Institut d'optique théorique et appliquée and professor at the French "grande école" SupOptique (École supérieure d'optique
École supérieure d'optique

The ?cole sup?rieure d'optique , nicknamed "SupOptique", is the leading French grande ?cole in the field of optics and its industrial and scientific applications, and a member of the prestigious ParisTech ....
).

astronomical Chrétien International Research Grants awards are in honor of him.






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Henri Jacques Chrétien (February 1, 1879, Paris
Paris

Paris is the Capital of France and the country's largest city. It is situated on the river Seine, in northern France, at the heart of the ?le-de-France Regions of France ....
 – February 6, 1956, Washington
Washington

Washington is a U.S. state in the Pacific Northwest region of the United States. Washington was carved out of the western part of Washington Territory which had been ceded by Britain in 1846 by the Oregon Treaty as settlement of the Oregon Boundary Dispute....
) was a French
France

France , officially the French Republic , is a country whose Metropolitan France is located in Western Europe and that also comprises various Overseas departments and territories of France....
 astronomer and an inventor.

Born in Paris
Paris

Paris is the Capital of France and the country's largest city. It is situated on the river Seine, in northern France, at the heart of the ?le-de-France Regions of France ....
, France
France

France , officially the French Republic , is a country whose Metropolitan France is located in Western Europe and that also comprises various Overseas departments and territories of France....
, his most famous invention is the anamorphic widescreen
Widescreen

A widescreen image is a film, computer or television image with a wider and shorter aspect ratio than the standard Academy frame developed during the classical Hollywood cinema era....
 process, that resulted in CinemaScope
CinemaScope

CinemaScope was a widescreen movie format used from 1953 to 1967. Anamorphices allowed the process to project film up to a 2.66:1 Aspect ratio , almost twice as wide as the conventional format of 1.37:1....
, and the co-invention (with George Willis Ritchey
George Willis Ritchey

George Willis Ritchey was an American optician and telescope maker and astronomer born at Tuppers Plains, Ohio.Ritchey was educated as a furniture maker....
) of the Ritchey-Chrétien
Ritchey-Chrétien telescope

The Ritchey-Chr?tien telescope or RCT is a specialized Cassegrain telescope designed to eliminate Coma , thus providing a relatively large field of view as compared to a more conventional configuration....
 type of astronomical telescope
Telescope

A telescope is an instrument designed for the observation of remote objects by the collection of electromagnetic radiation. The first known practically functioning telescopes were invented in the Netherlands at the beginning of the 17th century....
.

He spent part of his early astronomical career at the Nice Observatory
Nice Observatory

The Observatoire de Nice is located in Nice, France on the summit of Mont Gros. The observatory was initiated in 1879 by the banker Rapha?l Bischoffsheim....
.

He was one of the founders of the Institut d'optique théorique et appliquée and professor at the French "grande école" SupOptique (École supérieure d'optique
École supérieure d'optique

The ?cole sup?rieure d'optique , nicknamed "SupOptique", is the leading French grande ?cole in the field of optics and its industrial and scientific applications, and a member of the prestigious ParisTech ....
).

Awards and honors

The astronomical Chrétien International Research Grants awards are in honor of him. The crater Chrétien
Chrétien (crater)

Chr?tien is a Moon Impact crater that is located in the southern sphere on the Far side of the Moon from the Earth. It lies due south of the Mare Ingenii, one of the few maria on the Moon's far side....
 on the Moon
Moon

The Moon is Earth's only natural satellite and the List of natural satellites by diameter satellite in the Solar System. The average centre-to-centre distance from the Earth to the Moon is km, about thirty times the diameter of the Earth....
 is named in his honor. In 1954, he received an Academy Award for his work on the CinemaScope process.