Gottfried Kirch (1639–1710) was an astronomer born in Guben, the maker of calendars and the author of ephemerides. He owed his fame to the discovery of the Great Comet of 1680, and he gained prestige as the first astronomer of the Royal Prussian Society of Sciences. The article summarises the current state of knowledge about Gottfried Kirch and presents his astronomical and calednariographic activity at various stages of his life, via the lens of the stays in Langgrün, Lobbenstein, Leipzig, Coburg, Guben and Berlin (Dorotheenstadt).
The activity of Christfried Kirch (1694–1740), son of Gottfried Kirch (1639–1710), the first astronomer of the Royal Prussian Society of Sciences, has not yet received much attention in historiography. Christfried Kirch’s astronomy education – beginning with the studies with his father, to the unfulfilled plans of visits to the observatories in England and France – culminated in his acceptance as an observer of the Royal Prussian Society of Sciences on October 8, 1716. The article aims to present the development of Christfried Kirch’s career and his efforts to achieve the position once held by his father in the Society of Sciences in Berlin.
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