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(Q53952982)
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Astronomy telescope on azimutal mount-Secretan
Astronomy telescope made by Secrétan (formerly Lerebours & Secrétan) around 1920
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instance of
telescope
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inception
1920
sourcing circumstances
circa
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image
Astronomy telescope on azimutal mount-Secretan-P5200296-gradient.jpg
5,000 × 5,000; 3.01 MB
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location
Musée d'histoire des sciences de la Ville de Genève
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collection
Musée d'histoire des sciences de la Ville de Genève
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focal length
153
centimetre
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diameter
10.73
centimetre
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Commons category
Astronomy telescope on azimutal mount-Secretan
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Category:Astronomy telescope on azimutal mount-Secretan