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Celestial map showing the course of Venus And Mercury

Doppelmeyer, Johann Gabriel Movement of Venus & Mercury. "Phænomena Motuum Irregularuim Venus et Mercurius...." Nuremburg Homann Johann Baptiste c1760
Copper engraved map showing the irregular movement of Venus And Mercury, from Doppelmayer's " Atlas Coelestis" original wash colour; verso blank.
Astronomical chart showing the course of the planets Venus and Mercury around the sun.; detailed text and astronomical diagrams.
The planets are illustrated in a vignette as allagorical figures in chariots; Venus accompaanied by the moon in a chariot drawn by three pairs of horses; Mercury's chariot driven by a putti is drawn by two birds; Zeus sits astride the sun. Dark impression; bright colour.

Johann Gabriel Doppelmayr (1677 - 1750)
Doppelmayr was born in Nuremberg to a merchant family. He attended the Aegidien-Gymnasium and the University of Altdorf where he studied mathematics, physics, and law. His graduating dissertation, a study of the Sun, suggests an early interest in Astronomy. Following his studies in Altdorf, Doppelmayr traveled extensively in Europe and is known to have spent time at the University of Halle, as well as in Utrecht, Leiden, Oxford, and London. He returned to Nuremburg in 1704 to take up a mathematics professorship at his alma mater, the Aegidien-Gymnasium. It may have been here that he developed a relationship with the prominent Nuremburg map publisher J. B. Homann, with whom he prepared a number of important astronomical maps and atlases. The collaboration of over 20 years eventually led to the publication of the "Atlas Coelestis" in 1742. This astounding work was the most elaborate and detailed astronomical atlas yet published and is today much admired for its rich beautifully engraved plates

Johann Baptist Homann (1664 – 1724)
from 1687 Homann worked as a civil law notary in Nuremberg. He soon turned to engraving and cartography; in 1702 he founded his own publishing house.
Homann acquired renown as a leading German cartographer, and in 1715 was appointed Imperial Geographer by Emperor Charles VI. Giving such privileges to individuals was an added right that the Holy Roman Emperor enjoyed. In the same year he was also named a member of the Prussian Academy of Sciences in Berlin. Of particular significance to cartography were the imperial printing privileges (Latin: privilegia impressoria). These protected for a time the authors in all scientific fields such as printers, copper engravers, map makers and publishers. They were also very important as recommendation for potential customers.
In 1716 Homann published his masterpiece "Grosser Atlas ueber die ganze Welt" Numerous maps were drawn up in cooperation with the engraver Christoph Weigel the Elder,
Homann died in Nuremberg. He was succeeded by the Homann heirs company, in business until 1848, known as "Homann Erben", "Homanniani Heredes", "Heritiers de Homann" abroad.
494 by 580mm (19½ by 22¾ inches).   ref: 2058  €520

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