I never see that image on my maps (but my maps always block out everything within scanning range) but I gather it's supposed to be a blank city on desert terrain. Note the cati (is that the plural of catus?) and the structures outside of the city. I'd like to conjure up an image of a ruined Falleen city (specifically my soon to be clan's ancient city of Aj'Salan) as a background to the modern city that now rests there.
I see I can purchase custom images for my facilities, items, ships/speeders, rooms and even for cities but there is no mention of the surrounding landscapes. I'm sold on the idea I'm just looking to make the sale.