What I need is a 50X50 grid. I could manage this with an array of landscapes. Each cell is a 2 km square. Let us say I can capture a 2km square cell with a google earth picture of 1024X1024 pixel. These pictures must be tileable, in other words, left of one tile must be the right of the next tile (side by side).
OK, I found this utility that will solve the problem:
http://allallsoft.com/gsmd/index.html