James far-side perspective

Parameters: Variant

Description

A perspective projection contrived to minimize distortion within the bounding circle that encompasses about 70% of the sphere.

Classifications

azimuthal
perspective

Graticule

Meridians: Straight lines radiating from the central pole in polar aspect.
Parallels: Concentric circles in polar aspect.

Parameters

Variant: Original James at 1.5×R or Clarke revision at 1.368×R.

Similar projections

This projection is a specialization of the far-side perspective.
Other far-side perspectives are AMS lunar, Clarke twilight projection, Fischer far-side perspective, Gretschel….

Origin

Proposed by Henry James in 1857. In 1862 Alexander Ross Clarke, collaborating with James, proposed a revision in the point of perspective to yield better optimization of distortion.

Description ©2010–2020 Mapthematics LLC.