Well, here is the rub : the ruins are not fixed relative to the sky, so the pillars being pointer is possible, but it may be only once every 6.9dy, and then I guess that there are many stars that would "fit the bill" so to speak.
I'm trying to imagine a way to use this idea to reduce the search time compared to a dumb brute force approach, and so far I fail.
1) each tower points at a circle on the sky. Since all the towers are close-by (in the sense that the distance between them is << than the planet radius) it's really only one circle.
2) add in uncertainty, and we have a high number of stars. This would be fine if there where a way to go from sky map to galaxy map, but there is not. (you cannot point at a start and just select...). This makes determining which stars in this circle corresponds to which systems in the gal map rather... tricky.
3) then, we still don't have any idea of the distance...
I *do* think that the best way to go is working toward finding new ruins, and that the clue we get about the network following a geometrical pattern is an important clue in that regard.
What I'm saying is that without an additional clue, this is rather tricky and prone to tinfoil runaway. (Like : say we suppose the pattern is made of triangles, and it's made of squares lol)*
*regular tillings only allow for triangles, exagons and squares. (though if FD went extra nuts could use penrose tillings and then lol)
My experience with the UP is that before solving the puzzle, one must understand what the pieces are. So far, it's unclear to me what the pieces are.
Anyway, the site latitude is ~-30°, so the sky circle has a ~120° opening (i.e. not a great circle).
And then there are the 5 pillars markings that so far no one (as far as I know) has been able to figure out. Might be a clue.
It seems that Guardians may have been putting a lot of meaning into number 3, with all the triangles and 3 data patterns we get from a scan. Now we have a planetary cycle of 6.9d which is also dividable by 3. Ofc might be just a coincidence, but if it not, maybe monolith point at something at 2.3 or 4.6 planetary cycle (assuming that 0(or 6.9) is where we at)... except now we need to determine starting point.