I have found 2 really great maps of the 40k universe:
One thing that puzzles me. I thought the limit to the Imperiums borders was based around the effective distance of the Astronomican. Anything beyond this will limit space travel to blind jumps, probably similar to the Tau.
Both maps show the Imperium have expanded well beyond the the Astronomican "Halo Zone".
In fact Ultramar seems to be well outside it on both, yet this was one of the 1st Space Marine chapters homeworld established during the Great Crusade. Surely this must place it well within the limits of the Astronomican. The fact that Ultamar is one of the most prosperous area od the Imperium must mean navigation cant be too much of a problem.
I know they are only fan maps, but I just wanted to know if my understanding of the 40k universe is current (as most of it is based on wh40k:rt).
Any thoughts, and does anyone know of any official maps?