Survey points on aerial imagery
This is a list of near or "on the ground" survey points with known accurate coordinates, which are visible on one or more aerial imagery layer. This list is useful to try to check the real datum used by the aerial imagery.
(accuracy is usually not very good: http://www.ga.gov.au/ngrs/
|Osm node||type||Coordinates + datum||imagery layer||external url||Note|
|https://www.openstreetmap.org/node/6514708097||GNSS Antenna||149°00'36.54757" E -35°18'58.19901" N GDA94||ACTmapi Imagery 2017, ACTmapi Imagery 2018, LPI Nsw Imagery|
survey_points with accurate RGF93 coordinates are already in OpenStreetMap. Official website: https://geodesie.ign.fr/fiches/index.php?module=e&action=visugeod