If you're looking for a better resolution version of the concept image, as far as I know there isn't one. The original is here, and it's not great: https://www-robotics.jpl.nasa.gov/tasks/showBrowseImage.cfm?...
Opening the image in another tab then zooming then I suddenly wonder why on Earth this is required. I know it's not malice, but there must millions of people with sub 20:20 vision who don't want to enable the screen magnifier when pinch is ALREADY A THING.