Beyond imaging, a related paper I came across goes in-depth on identifying the interstellar nodes/constellations to furnish an actual network mesh:

> [ABSTRACT] An interstellar communication network benefits from relay nodes placed in the gravitational lenses of stars. The signal gains are of order 10^9 with optimal alignment, allowing for GBits connections at kW power levels with meter-sized probes over parsec distances. If such a network exists, there might be a node in our solar system: where is it?

In: Hippke, M. (2021). Interstellar communication network (III). Locating deep space nodes. arXiv preprint arXiv:2104.09564[0].

[0]: https://arxiv.org/pdf/2104.09564