The Aitoff coordinate system is a coordinate reference system. It is composed of :
- a reference frame : the reference geoid, which is set as parameter of the options object,
- a projection : the Aitoff projection.
The Aitoff projection is a modified azimuthal map projection first proposed by David A. Aitoff in 1889.
Based on the equatorial form of the azimuthal equidistant projection, Aitoff halved longitudes from the central
meridian, projected by the azimuthal equidistant, and then stretched the result horizontally into a 2:1 ellipse.
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