Fiche du document
1978
Copyright PERSEE 2003-2023. Works reproduced on the PERSEE website are protected by the general rules of the Code of Intellectual Property. For strictly private, scientific or teaching purposes excluding all commercial use, reproduction and communication to the public of this document is permitted on condition that its origin and copyright are clearly mentionned.
Sujets proches
MarsCiter ce document
André de Cailleux, « Un planisphère de la planète Mars en projection équiaréale », Annales de géographie, ID : 10.3406/geo.1978.17876
Métriques
Partage / Export
Résumé
Previously, most maps of the Moon and the planets were made in a perspective, so-called orthographic projection. They are neither equal-area nor conformal. Fortunately enough we are able to make other kinds of maps. For the Moon and the planets, most of them are conformal. But for some purposes equal-area maps are necessary. And as everyone knows, no projection can be both conformal and equal-area. The map of Mars published by U.S.G.S. (United States Geological Survey) is a wonderful document, in conformal projection. On the base of this document, I prepared a planisphere of Mars in the equal-area Mollweide projection (Fig. 1). Now, I think that the equal-area Hammer-Aïtoff planisphere might be even better because the polar and equatorial regions are less deformed, and the curved parallels better suggest to the eye the spherical form of the planet.