How could you display such images? I've only seen motherboards carry up to 4 gigabytes of memory. 86400x43200 (interesting texture size (care to split it up into dozens of 2048x2048's?)), would need 11,197,440,000 bytes of memory just to display it (uncompressed, in which memory usually is). I'd rather stick to something around 10800x5400 instead and just stitch a few textures together.