1717-77.
Tysk kartograf. Från 1740 var han som svärson knuten till Matthaers Seutters (se denne) kartförlag. Efter Seutters död 1757 övertog han en del av dennes affär som han drev vidare i svärfaderns namn. Lotters kartor vann erkännande. Han gav ut egna arbeten i större utsträckning än Seutter, och allierade sig speciellt med nya engelska kartritare. Av kompletta atlaser kan nämnas 'Atlas minor' (ca. 1744) och 'Atlas novus' (ca. 1772).
Bland arbeten.
Atlas minor.
Atlas novus.
Allg. d. Biogr., art. Seutter. - Phillips.
Son till Jodocus Hondius d.ä.
, holländsk kartograf i slutet av 1600-talet. 1661 utgav han i Amsterdam ett sjökartverk, 'Klaer lichtende Noort-Steer ofte Zee Atlas'. Den blev utgiven på nytt 1666 och 1668 i samarbete med J. Janssonius van Waesberghe. I övrigt är han känd för olika kartor, Janssonius atlas 1666, Moses Pitts 1680, N. Visschers 'Atlas Minor' ca 1690 och för van Keulens 'Zee-Atlas' 1695. - Övriga upplysningar ej hittade.
Joannes van Loon was an accomplished mathematician and astronomer. His first cartographic involvement's were with Theunis Jacobsz during the 1640s.
Van Loon was a mathematician and engraver who contributed charts and maps to various pilot books and sea atlases by Jacobsz, Jan Jansson, Johannes J anssonius van Waesbergen and Robijn. In 1661he published a sea atlas which was popular until the end of the century.
Bland arbeten.
Klaer lichtende Noort-Steer ofte Zee Atlas.
Atlas Minor.
Zee-Atlas.
Phillips.
Karta öfver Stockholm. - 1904.
Adelcrantz - C. H. Tersmeden ca 1900.
Cassini de Thury, César-François
Biografiska uppgifter:17 June 1714 – 4 September 1784
César-François Cassini de Thury (17 June 1714 – 4 September 1784), also called Cassini III or Cassini de Thury, was a French astronomer and cartographer.
Cassini de Thury was born in Thury-sous-Clermont (Oise), the second son of Jacques Cassini and Suzanne Françoise Charpentier de Charmois. He was a grandson of Giovanni Domenico Cassini, and would become the father of Jean-Dominique Cassini, Comte de Cassini.
In 1735, he became a member of the French Academy of Sciences as a supernumerary adjunct astronomer, in 1741 as an adjunct astronomer, and in 1745 as a full member astronomer.
In January, 1751 he was elected a Fellow of the Royal Society.
He succeeded to his father’s official position in 1756 and continued the hereditary surveying operations. In 1744, he began the construction of a great topographical map of France, one of the landmarks in the history of cartography. Completed by his son Jean-Dominique, Cassini IV and published by the Académie des Sciences from 1744 to 1793, its 180 plates are known as the Cassini map(fr).
The post of director of the Paris observatory was created for his benefit in 1771 when the establishment ceased to be a dependency of the French Academy of Sciences.
His chief works are: La méridienne de l’Observatoire Royal de Paris (1744), a correction of the Paris meridian; Description géométrique de la terre (1775); and Description géométrique de la France (1784), which was completed by his son ('Cassini IV').
César-François Cassini de Thury died of smallpox in Paris on 4 September 1784,
The Cassini projection is a map projection described by César-François Cassini de Thury in 1745. It is the transverse aspect of theequirectangular projection, in that the globe is first rotated so the central meridian becomes the 'equator', and then the normal equirectangular projection is applied.
In practice, the projection has always been applied to models of the earth as an ellipsoid, which greatly complicates the mathematical development but is suitable for surveying. Nevertheless the use of the Cassini projection has largely been superseded by the Transverse Mercator projection, at least with central mapping agencies.
Areas along the central meridian, and at right angles to it, are not distorted. Elsewhere, the distortion is largely in a north-south direction, and varies by the square of the distance from the central meridian. As such, the greater the longitudinal extent of the area, the worse the distortion becomes.
Due to this, the Cassini projection works best on long, narrow areas, and worst on wide areas.
