I wrote a big long thing and then something wouldn't let me post D:
I think the problem with those charts for a galaxy is that... well... I don't know how to say it really.
You can sail in any direction *on* the earth, but you can't sail *inside* it, or out into space
So you're dealing with a lot more directions with a galaxy which isn't as ... well... help me out here... the earth isn't 2D, but the sailing isn't really 3D either...
So I'm sure it can be done, just not sure how.
Hmm.. lots of people doing star maps but what you want makes me think most of... like this challenge entry (the second map, all the way at the end of the thread).
I'm thinking you could do something similar... set aside certain *clusters* of the stars to represent that they are higher or lower, not so much north-south-east-west.
If you did it with outlines/boxes/something instead of colors, maybe?
idk.. i'm not real bright... you'll have better luck waiting for the smarter people
Just wanted to show a *really bad* illustration of the sort of thing I mean... of course you'd have better shapes... >.<
EDIT PART 2:
Also I think you've got too much unnecessary space around the stars... simple map, a few points, it should be zoomed in a bit?
EDIT the Third:
There's a few spots where the lines overlap in weird ways, just slightly off center enough that it throws off the whole thing (see in red)