I have found a lot of fantastic information about Wilbur on this site but have not been able to find an answer to this question.

I currently have a 5120x5120 image of my world that was drawn in Photoshop (silly to draw it square, I know). I've imported it into Wilbur, but it is does not cover the entire 'globe' inside the program, even in the square projection, just a much smaller portion. I'm wondering if someone knows of a way to import it as an entire world or what size an image needs to be for Wilbur to read it in as such?

Thanks in advance for any help.