Flux cannon

Flux Cannon was a type of superlaser constructed by a group of Anomid technological savants known as the Schism Collective, having joined with Darth Malgus' Sith Empire it was fitted onto the Emperor's space fortress which had been stolen by Malgus after the defeat of the Emperor's Voice during the Battle of Dromund Kaas which subsequently left the Empire leaderless save for the Dark Council.

Characteristics
The Flux cannon was a powerful piece of technology used together they are capable of vaporizing entire capital ships with a single shot but they also required a lot of power which stands to reason why they were only used on the Emperor's Space Fortress due to the Rakatan energy core technology. If used in concert, they were capable of obliterating an entire fleet that came into weapon's range within minutes.

History
The Flux cannons made their first appearance during the Battle of Ilum (Cold War) by use of the New Empire after the revelation of Malgus' betrayal to the Empire. Fitted onto his newly stolen space station that had once orbited Dromund Kaas, they were used as a threat against the Galactic Republic and Sith Empire's fleets along with the crystal stealth fleet that was in development. The cannons full power was finally revealed when a team of either Republic or Imperial agents boarded the space station and reaching the power core with the Schism Collective leader vaporizing one of their respective capital ships as a warning. Eventually during the fighting, the controls were destroyed making them useless while the team continued on to face Malgus, in the end, the Flux Cannons and the Emperor's space fortress were destroyed with the Imperial Reclamation Service or Strategic Information Service scouring through the debris.

Appearances
Star Wars: The Old Republic (first appearance) (The False Emperor flashpoint)