1846 SDUK Antique Gnomonic Map of Australia, New Zealand & South Pacific, Hawaii

Cartographer : Society for the Diffusion of Useful Knowledge

  • Title : Published by the Society for the Diffusion of Useful Knowledge
  • Date : 1846
  • Size: 16in x 13in (400mm x 330mm)
  • Ref:  11-0984
  • Condition: (A+) Fine Condition

This fine hand coloured original antique map of Australia, New Zealand and the South Pacific including Hawaii - on a gnomonic projection - was published in the 1846 Charles Knight edition of the Society For the Diffusion of Useful Knowledge (SDUK) Atlas.

A gnomonic map projection displays all great circles as straight lines, resulting in any line segment on a gnomonic map showing a geodesic, the shortest route between the segment's two endpoints. This is achieved by casting surface points of the sphere onto a tangent plane, each landing where a ray from the center of the sphere passes through the point on the surface and then on to the plane. No distortion occurs at the tangent point, but distortion increases rapidly away from it. Less than half of the sphere can be projected onto a finite map. Consequently a rectilinear photographic lens cannot image more than 180 degrees.

General Description:
Paper thickness and quality: - Heavy and stable
Paper color: - white
Age of map color: - Original Colors used: - Green, yellow
General color appearance: - Authentic
Paper size: - 16in x 13in (400mm x 330mm)
Margins: - min. 1in (25mm)

Margins: - None
Plate area: - None
Verso: - None