'Ruins and Reverberations' quest walkthrough in Arc Raiders

The "Ruins and Reverberations" quest in Arc Raiders involves a quick visit to the Cielo Sereno Observatory, which is one of the new locations on the Pendola Pass map, introduced to the game with the "Frozen Trail" update. There are just three steps in this quest, and if you know where to go you can do it in a flash, but it's easy to get lost.