Stock Photo - 19 June 2019, Hamburg: Robi Banerjee, director of the Hamburg observatory in Bergedorf, stands in front of a building. The Large Refractor, a telescope with a lens diameter of 60 centimetres and a focal length of nine metres dating from 1911, was reopened today (19.06.2019) after extensive renovation work. Photo: Markus Scholz/dpa. - Hamburg/Hamburg/Germany

Stock Photo: 19 June 2019, Hamburg: Robi Banerjee, director of the Hamburg observatory in Bergedorf, stands in front of a building. The Large Refractor.

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