westermayer c onrad (8 risultati)

Johann Gabriel Doppelmayr Stipple-engraved portrait. Among the many portraits engraved for Zach and Bertuch's 'Allgemeine Geographische Ephemeriden' during the early nineteenth century was one of German mathematician, astronomer and cartographer, Johann Gabriel Doppelmayr (1677-1750). Doppelmayr's 'Atlas Coelestis' was published by his close friend Homann in 1742; it contained 30 plates, 20 of which depicted astronoomical themes and systems, including those of Copernicus and Tycho Brahe. His astronomical contributions resulted in both a lunar crater and a minor planet being named after him. Depicting Doppelmayr in academic robes and a voluminous peruke, the portrait may have been based on an earlier engraving publilshed in Nuremberg in 1727.

Johann Baptist Homann Stipple-engraved portrait. Another portrait of Johann Baptist Homann appeared in Volume 8 of the 'Allgemeine Geographische Ephemeriden' published in 1801. The engraving was executed in the magazine's signature style, with the portrait in an oval and the subject's name and significant dates given below, and like many others was made by Conrad Westermayer. It was based on a painting of Homann made by Johann Kenckel while the publisher was alive, and shows him wearing a formal coat and cravat, along with a large powdered wig.

Jean Dominique Cassini Stipple-engraved portrait, trimmed within plate mark on right. Giovanni Domenico Cassini (1625-1712) an Italian mathematician and astronomer, who, on taking up French citizenship, changed his name to Jean-Dominique. He discovered four of the moons and the Cassini Division in the rings of Saturn in 1675. In cartography he was the first to make successful measurements of longitude by the method suggested by Galileo, using eclipses of the satellites of Jupiter as a clock, a method used to measure France accurately for the first time. On hearing that France was considerably smaller than expected, Louis XIV joked that Cassini had taken more of his kingdom from him than he had won in all his wars. An 1808 issue of the 'Allgemeine geographische Ephemeriden', the geographical journal published by Zach and Bertuch, contained a portrait of Cassini engraved by German draughtsman Westermayer after a portrait by French artist Jean Henri Cless. The astronomer is shown in three-quarter view wearing robes and a long dark wig.

Charles Marie de la Condamine Stipple-engraved portrait. Along with his friend Voltaire, Charles Marie de la Condamine (1701-1774) exploited a loophole in the state lottery as a young man, winning a small fortune. It may have been this venture that funded his travels in the following years. He visited Constantinople, Ecuador, Panama, and Peru, in part with the French Geodesic Mission to make measurements of the equator. Upon his return to Europe, Condamine published numerous written works, which included the first descriptions of the curare arrow poison and of the correct use of quinine to fight malaria. Condamine also prepared the first map of the Amazon region based on astro-geodetic observations, and made notable contributions to the great 'Encyclopédie' published between 1751 and 1772. The portrait in Zach and Betruch's geographical journal was based on an earlier engraving by P. Choffard, and shows Condamine in profile wearing a peruke, suit and lace cravat, accompanied by his name and date of death written below.

Nicolas-Thomas Baudin Stipple-engraved portrait. Nicolas-Thomas Baudin (1754-1803) was a French explorer, cartographer, naturalist and hydrographer, best known for his expedition to map the coast of Australia, then New Holland, which he undertook from 1800 to 1803. While moored at the British base in Sydney for supplies, he prepared a report for Napoleon on a potential French attack on the colony, and later named the coastline from Wilson's Promontory to Cape Leevwin, 'Terre Napoleon'. Baudin died of tuberculosis at Mauritius in 1803, aged only 49. Baudin's portrait featured in Volume Seven of 'Allgemeine Geographische Ephemeriden' published in 1801. The magazine's engraver, Conrad Westermayer, based the portrait on an earlier image of Baudin made the previous year by painter Joseph Jauffret. The portrait, which shows Baudin in a formal coat with embroidered collar, is accompanied by a caption in German briefly is explaining his rank and naming his most important voyage. See Kivell & Spence: Pg. 24 - not in.

Cesar-Francois Cassini Stipple-engraved portrait. César-François Cassini de Thury (1714-1784) came from and continued a line of astronomers, with his grandfather, father and son all studying and observing the movements and positions of celestial bodies. In 1744, he began the construction of a huge topographical map of France, one of the landmarks in the history of French cartography, which was posthumously published in 180 sheets by his son. Cassini appeared in an issue of the 'Allgemeine geographische Ephemeriden', the geographical journal published by Zach and Bertuch, in 1808. His portrait was engraved by German draughtsman Westermayer after a portrait by French artist Jean Henri Cless. Cassini's bust is shown in three-quarter perspective; he is wearing a powdered wig and voluminous robes. Beneath the oval containing the image German text identifies him as "Erster Herausgeber des grossen Atlas von Frankreich" ('First editor of the great atlas of France').

Samuel Graf von Schmettau Stipple-engraved portrait. Samuel Graf von Schmettau (1684-1751) was a Prussian who began his military career by fighting in the battles of Blenheim and Malplaquet, continuing through the Austro-Turkish War of 1716-18, the wars of the Quadruple Alliance ((1718-20), the War of Polish Succession (1733-8), and the Russo-Austrian-Turkish War (1735-9). Retiring from military life at almost sixty years of age, Schmettau became a diplomat and served as a curator of the Academy of Sciences. Schmettau continued actively to educate himself, particularly in the field of cartography; in 1748, he created a four-sheet plan of Berlin widely regarded as the best of its time: 'Plan de la Ville de Berlin'. Schmettau's portrait, accompanied by his rank, and dates of birth and death written below, was engraved for Issue 11 of 'Allgemeine Geographische Ephemeriden' by Conrad Westermayer, and may have been based on a portrait by Dutch painter Anna Dorothea Therbusch. It shows the veteran in a jacket and sash over what appears to be metal armour; he is wearing a powdered wig, and the image is set within an oval.

Jean Dominique Cassini II Stipple-engraved portrait. Jean-Dominique Cassini (1748 1845) was the last in the line of prominent French astronomers originating with his great-grandfather, also named Jean-Dominique Cassini. Born at the Paris Observatory, Cassini was raised to be an astronomer. In 1770, Cassini published an account of a voyage to America that he had undertaken 1768 in order to test Pierre Le Roy's watches at sea. In 1783, he made a proposal to the Royal Society for a trigonometric survey connecting the observatories of Paris and Greenwich for the purpose of better determining the latitude and longitude of the latter. His proposal was accepted, and the results of the subsequent Anglo-French Survey were published in 1791. As well as fulfilling his inherited role as director of the observatory, Cassini also completed his father's map of France, which served as the basis for the 'Atlas National' (1791), showing France in departments. Hostilities from the National Assembly led to Cassini's resignation in 1794 before a seven-month stint in prison, from which he luckily escaped with his head. Cassini appeared alongside some of his forebears in an issue of Zach and Bertuch's 'Allgemeine geographische Ephemeriden' in 1808, with his portrait similar engraved by Westermayer after Cless. Showing Cassini is a short powdered wig with ponytail, and smartly dressed with a lace cravat, the engraving also notes his date and place of birth.