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Description

Finely constructed map of the celestial sky, published by the French National Institute of Geography.

The image consists of 2 maps of the celestial skies on two separate projections.

The map notes that:

This Chart of the Sky, constitutes a precise working instrument for the measurements intended for the determination of the astronomical coordinates of the point of observation (astronomy of position); but it is more particularly intended for amateur astronomers or people wishing to have a map that is both decorative and complete.

The map represents the starry celestial sphere. The aspect of the main constellations is highlighted in a schematic way by means of lines connecting the stars; the latter are reported according to conventional signs which specify their apparent magnitude.