List of known Guardian / brain tree areas

[marx]

I made this for elsewhere, but since the question often comes up, here's a list of the Guardian / brain tree territories. If you find any, you can check if your system is a part of these: if not, then congratulations, you found a new one!

So:

Main Guardian territory: 750 ly around Gamma Velorum - this is the main plot area, and it contains Guardian Ruins, Structures, and Beacons

Distant Guardian territories, which hold only Guardian Ruins:
1. 750 ly around Hen 2-333 - IC 4673 planetary nebula, which has a 100 ly permit lock around it, and excluding the systems which are in the neighbouring Norma Arm region - also called the Graea Hypue area after the proc. gen. sector
2: 100 ly around Prai Hypoo AA-A h60 nebula
3. 100 ly around Eorl Auwsy AA-A h72 nebula
4. 100 ly around Skaudai AA-A h71 nebula
5: 100 ly around Blaa Hypai AA-A h68 nebula
6: 100 ly around Eta Carina nebula
7: 100 ly around NGC 3199 nebula

If you find any brain trees that are outside these places, let us know!

 

[Alkibiades]

Main Guardian area: 750 ly around Gamma Velorum - this is the main plot area, and it contains Guardian Ruins, Structures, and Beacons

Isnt it limited by the grid? For example the bts stop at 400 right of sol, at the very border of the grid. I found bts in IC 2602 sector bq-y c26, but never left of the 400 border.

Found my personal work in progress braintrees maximum expansion grid.

 

[marx]

Isnt it limited by the grid? For example the bts stop at 400 right of sol, at the very border of the grid. I found bts in IC 2602 sector bq-y c26, but never left of the 400 border.

Hm, looking at the relevant EDAstro map again, you might be right, and I just didn't notice this small part, because it only chops off a small part of the sphere. Gonna have to plot the coordinates instead of just eyeballing it though.

 

[Alkibiades]

Here are other bordersystems I found.

swoilz tw-a c2-9 border is 1210 towards saga. Nothing beyond it.

col 173 sector oe-y b31-9 close to 1800 but seems to be the 750ly limit

bottom is col 173 sector rf-u b30-1 at -648ly, border seems to be -650

I never looked at the distance to gamma velorum, I wanted to find the maximum expansion of bts. And if you go looking for them in certain areas you realise that they seem to be limited by the grid.

 

[marx]

Let's not forget that systems aren't guaranteed to have brain trees: they need to have at least one body that meets all the criteria.
The way to determine these territories was quite simple. Plot the BTs on a map (for example, see here) and they form obvious spheres. You can calculate where the center should be, and see what's there: within the errors, they line up with these systems perfectly.

Next, to check the distance limit, you can find planets which should host brain trees - but don't. (Do note that the smallest moons might not work for this: if they are extremely small, then they might not have enough suitable space left over after the geological POIs for the biologicals to be placed.) For example, even at 750.02 ly from Hen 2-333, you no longer see brain trees where they should be. In that special case either, as soon as you go into the neighbouring Norma Arm region, they stop appearing (and you can also see on the Codex that nobody has found brain trees there), even if the distance would be fine. As you can see from the map as well, the sites align with the region border.

I suppose that parts of the main sphere back around Gamma Velorum might also be shaved off by some coordinates, I haven't looked into this in that much detail yet. It would make sense that Frontier would want to limit it so that it doesn't get too close to the bubble.

This is more for knowing what brain tree territories have been found anyway, so that any new BT systems can be checked to see whether they might be in a new territory, or in one that's already known.


Oh, and while there are three singular dots in the EDSM data near the bubble that don't find in the main bubble, those are bugged submissions: if you go to their systems, you won't find any brain trees there now.