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HomeContentsVisual indexesJohann Julius Friedrich Berkowski

Johann Julius Friedrich Berkowski 
Solar eclipse [taken at the Royal Observatory in Königsberg, Prussia (now Kalinigrad in Russia)] 
1851, 28 July 
Creative Commons - Wikipedia 
A small 6-cm refracting telescope was attached to the 15.8-cm Fraunhofer heliometer and a 84-second exposure was taken shortly after the beginning of totality. 

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