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Notes on an extended isogonic map for the epoch 1950.5 for R.A.A.F. long range plotting charts

Created 17/10/2025

Updated 17/10/2025

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This map has been prepared to display the probable form of the Isogonic Lines in the regions surrounding Australia, the boundaries being the meridians 85°E and 180°, and the parallels of latitude 10°N and 60°S. This report contains explanatory notes to the isogonic map.

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Additional Info

Field Value
Title Notes on an extended isogonic map for the epoch 1950.5 for R.A.A.F. long range plotting charts
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/d100c558-3f22-4256-a0a1-d624eb9ef3a1
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        85.0,
        -60.0
      ],
      [
        180.0,
        -60.0
      ],
      [
        180.0,
        10.0
      ],
      [
        85.0,
        10.0
      ],
      [
        85.0,
        -60.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Notes on an extended isogonic map for the epoch 1950.5 for R.A.A.F. long range plotting charts". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/notes-on-an-extended-isogonic-map-for-the-epoch-1950-5-for-r-a-a-f-long-range-plotting-charts