Spot-4 satellite. Computer artwork of the French Spot-4 satellite. The cyan, pink, mauve and grey lines which form triangles represent Spot-4's "Vegetation" imaging system. This system records images in visible and infrared light over a width of 2250 km. It enables constant, regional and global monitoring of the continental biosphere and crops. Resolution is around 20 metres over a 60 kilometre square image. Spot 4 was launched on 24 March 1998 by an Ariane 4 rocket. It orbits at a height of 822 kilometres. It is powered by electricity generated in its solar panels (blue, upper right). The majority of the rest of the satellite is taken up with its guidance systems.
Model release not required. Property release not required.