Heinrich Christian Schumacher (* 03. September 1780 Bramstedt † 28. December 1850 Altona) was a German astronomer, geodesist and publisher of the "Astronomische Nachrichten". After finishing his studies in Göttingen, he in 1808 started an extensive correspondence with Gauß. In it he wrote about his work as land surveyor and cartographer of Holstein and from 1821 onward about the building of the new observatory in Altona. Other works he did included experiments on earth magnetism.

Sources: Wikipedia, Deutsche Bibliographie

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