Equirectangular
The whole sphere: longitude across the width, from -180 degrees at the left edge to 180 at the right, and latitude down the height, from 90 degrees at the top to -90 at the bottom.
The whole sphere: longitude across the width, from -180 degrees at the left edge to 180 at the right, and latitude down the height, from 90 degrees at the top to -90 at the bottom.