Jump links from Sol using realistic star locations

[Malenfant]

Here's something that'll either give people heart attacks or a good chuckle

.

I managed to pull a realistic star list together by merging RECONS and HIPPARCOS. The pictures on this thread show all the stars within 25ly of Sol (ie the July 1st 2005 RECONS dataset) - the green links between the stars connect star pairs with a separation of 1pc (top image), 2pc (middle image) and 3pc (bottom image). In other words, these images show you what real stars you can reach with a J1, J2, and J3 drive respectively. Sol is the big yellow star in the middle.

As you can see, with J1 the Solomani have to use Tugs and Deep Space Jumps to get anywhere from Sol.

When they get J2, then from Sol they can directly access Alpha/Proxima Centauri, Barnard's Star, and Ross 154 , but after that they need to resort to DSJs again.

At J3, they can suddenly go pretty much anywhere they want.

That's in a realistic universe of course. We all know by now that the OTU isn't realistic though .

 

[Rupert Boleyn]

Originally posted by Malenfant:
Here's something that'll either give people heart attacks or a good chuckle

.

As you can see, with J1 the Solomani have to use Tugs and Deep Space Jumps to get anywhere from Sol.

When they get J2, then from Sol they can directly access Alpha/Proxima Centauri, Barnard's Star, and Ross 154 , but after that they need to resort to DSJs again.

At J3, they can suddenly go pretty much anywhere they want.

What do the maps look like using 1.5pc and 2.5pc? Many people assume a 1 parsec jump could be as high as 1.499... parsecs and that distances are rounded to the nearest parsec.

 

[mike wightman]

Great work Mal

That second map looks like it may be of some use...

 

[Ran Targas]

^ Bravo Mal! Excellent work my friend.

 

[Fritz_Brown]

Shiny!

 

[Malenfant]

Originally posted by thrash:
As I have mentioned before, the available evidence suggests that the "one hex equals one parsec" relationship is not, in fact, accurate. A more reasonable value is 1.2 pc (3.95 ly) per hex or per jump number. At this range, Jump-2 (2.4 pc) routes are adequate for getting around the Solar neighborhood -- just as they are in canon.

The 1.2 pc map looks pretty much like the 1 pc map.

However, you're correct - here's the 2.4pc (7.82784 ly) map:

(I added some axes around Sol. +X (RA 0h) is red, +Y (RA 6h) is white. We're looking up at Sol from 'below' (-Z, Dec -90)).

 

[TheDS]

I was about to ask which axis was to the core, but I see you didn't correct for that this time.

 

[Malenfant]

Originally posted by TheDS:
I was about to ask which axis was to the core, but I see you didn't correct for that this time.

Nope, I originally compiled the updated star list for the 2320AD playtest, and the coordinates in the original 2300AD Near Star List are in the equatorial (RA/Dec) frame, not Galactic co-ordinates.

It shouldn't be too hard to convert them to galactic coords though. I'll see what I can do.

 

[Malenfant]

That was easy enough...

This map shows the 2.4pc links (J2) between stars, in a galactic co-ordinate system instead of an equatorial one. The Red axis points Coreward, the White axis is Spinward.

It's a bit of a mess of links, but if you compare this with my previous near-Sol maps, you may be able to see that it does match.