this is a bit of code from the "Map.cs" in the "DeepEarth" project...
if you read the comment it seems as if that the map center point is set there... for loading..?
//TODO: Probably should cache the center to allow the
//user to set it before the map loads
IProjection projection = Projection;
if (projection !=
null && MultiScaleImage !=
Point pixel = projection.ToDisplay(value,
pixel = TransformToVisual(MultiScaleImage).Transform(pixel);
ViewOffset = pixel;