Mongoose Gar said:
It's not to scale. There's no consistent ratio between distances in hyperspace and distances in realspace.
Exactly, and real space distances are irrelevant to a race with Jump Gate technology.
It should also be noted that this is only a map of the systems connected via jump routes, not necessarily the entirety of explored space. Ships that can go off beacon with some safety such as Explorers have probably been to quite a few other candidate systems that just had nothing of promise in them and so didn't leave a gate behind.
When you put the "known" systems from the map into a 3D star viewer such as Cherryh View the spatial relations are kinda "odd".
The old CE Babylon Project jump route map had some "real world" system names on it (though some have been superceded by revisions by both AOG and Mongoose) and that's the major source for this kind of thing.
There's some blurb in one of the AOG supplements (and I can't remember the exact source) that the region of hyperspace in the vicinity of Earth is "turbulant" which restricted exploration in that vicinity until quite recently (and the Centauri discovery of Earth and the Sol system).
Humanity rapidly explored the overlooked systems once they had jump tech having a good feel for the likely systems from local real space observations, though if you look, they pretty much went for systems that were "real space close" to Earth (Proxima, Wolf being prime examples).