Forgotten Frontier Evacuation Center

Forgotten Frontier Evacuation Center - Magnetometric
Class 4 Archaeology or Salvage Site
NPCs - Hostiles

First Encounter
Emergent Defender x4 (Frigate Class - )
Sleepless Preserver x1 (Battleship Class - )

Killing the Sleepless Preserver triggers the next spawn.

First Wave
Awakened Defender x4 (Crusier Class)
Sleepless Preserver x2 (Battleship Class - )

Killing the last Sleepless Preserver triggers the next spawn.

Second Wave
Sleepless Defender x2 (Battleship Class - )
Sleepless Preserver x2 (Battleship Class - )

Misc
Sleeper Artifact x10

(Source)