About This Content

This Earth HD DLC (addon) contains high-resolution textures of Earth. It improves level of detail of Earth's surface compared to the default SpaceEngine installation.

Credits:
Based on surface and elevation maps by Robert Skuridin "PBC", city lights map by John van Vliet and Sean Young "HarbingerDawn", and clouds map by Vladimir Romanyuk "SpaceEngineer".

Source data:
Elevation map: NASA SRTM (Shuttle Radar Topography Mission), GEBCO (General Bathymetric Chart of the Oceans)
Image resolution: 86400x43200 (land areas, SRTM), 21600x10800 (ocean floor, GEBCO)
Effective resolution: 0.46 km/pix (land areas, SRTM), 1.85 km/pix (ocean floor, GEBCO)

Surface albedo map: NASA BMNG (Blue Marble Next Generation), GEBCO (General Bathymetric Chart of the Oceans)
Image resolution: 86400x43200 (land areas, BMNG), 21600x10800 (ocean floor, GEBCO)
Effective resolution: 0.46 km/pix (land areas, BMNG), 1.85 km/pix (ocean floor, GEBCO)
Water mask is in the alpha channel of the textures.

City lights map: NASA Earth Observatory
Image resolution: 54000x27000
Effective resolution: 0.75 km/pix

Clouds coverage map: NASA Blue Marble
Image resolution: 43200x21600
Effective resolution: 0.93 km/pix