OGS-2.5
Astrolight's optical ground station model. The first one, at Aristotle University of Thessaloniki's site in Holomondas, Greece, receives laser downlinks from a satellite twice a day and is run remotely from Lithuania.
Why it matters
Proving that laser downlinks can run every day, remotely, is a step from experiments to a service operators can rely on.
How the technology works
A ground telescope tracks the satellite and receives data from Astrolight's ATLAS-1 laser terminal. Astrolight upgraded the university's HolOGS-1 station to its OGS-2.5 model; it runs links autonomously on a pre-set schedule and is operated remotely.
Sources
Updated Oct 22, 2026 · How we source facts · Suggest a correction