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Pierre Jules Cesar Janssen
Transit of Venus
1874
Glass negative, in wooden frame
25.5 x 25.5 cm
National Maritime Museum
Id number: AST1087
LL/46459
Circular negative in square wooden frame. 48 exposures of the planet Venus crossing the Sun's limb with number scratched onto the glass every tenth. Paper label stuck into the centre gives details of the photograph including the date.
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