Not sure if this is the right forum for this if, not Mods move me away

I'm looking for detailed overlays for G. Projector - specifically earth outline and borders; as well a high res B/W equirectangular earth map (or overlay for G. Projector), though haven't had any luck so far. The default overlays all have an artificial look - creating lots of straight lines that look a bit naff once rendered. help!