The Epsilon Pulsar Cluster was a pulsar cluster in the Alpha or Beta Quadrant. As of 2365, this cluster had recently formed in the Epsilon IX sector.
Shortly after stardate 42779, the USS Enterprise-D performed an astronomical survey of the cluster, a mission eagerly anticipated by Captain Jean-Luc Picard. (TNG: "Samaritan Snare")
This cluster was only mentioned in dialogue.