Photograph of the Sun, taken from Paris, France, 20 July 1875.

Janssen, Pierre Jules Cesar

 
Photograph of the Sun, taken from Paris, France, 20 July 1875.
4 0 c m
 
37cm
actual image size: 29cm x 32cm

Description

Photograph of the Sun with sunspots, dated 20 July 1875 (?), taken by the French astronomer Pierre Jules Cesar Janssen (1824-1907) at the Meudon Observatory, Paris. This early photograph of the Sun was taken using a wet collodion plate with its poorly light sensitive film emulsion. Despite the brightness of the Sun it needed an exposure of 23 seconds through the telescope to record a useable image.

Image Details

Image Ref.
 
10415871

© Science Museum / Science & Society Picture Library

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