Thanks!
That was downsized from 8000 some by 4000 some pixels. Direct from the magellan dataset.
It's not pefect though
I had to make the magellan data into 4 tiles and tile them together in photoshop, and they're "slightly" off from each other so you can see the seams where the heights were different, if you look closely. Plus it's not made to go on a sphere so the top and bottom of the planet will be distorted. There's a way I can fix that, IIRC, but I don't know how accurate it will be.
