Mass effect 3 Mission: Priority horizon, which galaxy is the sage of horizon?

You first go to the map of the Milky Way on the floor of Normandy Operational Intelligence Center, open it, get off track, then pull the boat to the mass relay, then click "Jump Mass Relay", and a big star map will appear. Then the task you receive must be at those points, and then move the red cross sights around those points one by one, and you will find it!