Alpha - Omega Prison The Alpha - Omega Prison was a top - security Imperial prison on the Alpha - Omega asteroid in Dandrian ' s Ring , orbiting the planet Dandrian . It was designed simply to hold important prisoners until they could be transported to a better facility . The base was controlled by a Captain - Supervisor and two Lieutenants , and had a garrison of twenty stormtroopers as well as both a medical and technician droid . There were two entrances to the prison , the primary method being through the docking bay and the second through a garbage chute on the underside of the asteroid . The garbage chute had an exterior hatch on it which could in fact be opened through brute force as well as computer slicing which led to a room via an emergency access tunnel in the floor . As with the previous one , the hatch in the floor here could be opened with brute force . This tunnel led to the engine room of the base which powered all the offensive and defensive equipment for the entire base . This room in turn led to the life support systems which controlled the temperature and oxygen levels throughout the prison , as well as the waste - disposal units and the artificial gravity generator . Close to these rooms is the tractor beam control room which contained consoles linked to the tractor beam systems , which were used in a different way to most tractor beams . Though used in the traditional method to guide ships into the docking bay , they were also used to push asteroids in Dandrian ' s Ring to the " side " to create a safe corridor for approaching ships . Two stormtroopers were always on duty here who manned the tractor beam as well as providing security . The docking bay was just down the hall from this room and was the primary entrance and exit for the base . Overseeing this bay was the flight control room , where a Lieutenant was always on duty monitoring the radar for approaching ships . Other rooms in the facility included a lounge where the stormtroopers enjoyed playing Vrax or watching vidscreen programs in their off - time , a galley which had an autochef that supplied food twice a day , a medical suite equipped with a single medical droid which was programmed to aid anyone who entered the room as well as a rejuvenation tank filled with bacta at the back of the room and a medpac which was fixed to the wall . Only three people could be treated in this room at any one time . There was also a small machine shop filled with repair machines used to repair anything from droids to spaceships . This room was also where the technician droid was stored . There was also a small storage room which contained all of the equipment for the base , including explosives , but not weaponry . The entrance to the crew quarters was through a barren hall which led off to the Captain - Supervisors room which was locked at all times , the trooper ' s room which always contained one to six stormtroopers at any time on their retractable cots , and a meeting room which led through to the Lieutenants room and was used for meetings between the Captain - Supervisor and his Lieutenants , as well as any important guests . The prison itself was split into five cells , lettered as A - E , which were all the same and furnished only with a retractable cot . Three stormtroopers were always on duty in the prison and stood behind a circular console which gave them some cover from the door in case of anyone breaking in . The cell doors were all controlled from this console . During the Galactic Civil War , the prison was used as a layover for defecting Imperial , Admiral Joser . When the group of Rebels who were supposed to meet him on Dandrian discovered that he was being held in the Alpha - Omega Prison , they successfully attempted to rescue him just before Darth Vader could arrive in the " Tyderium " to take him to another facility . Behind the scenes . Alpha and Omega are the first and last letters of the Greek alphabet ; when together , they symbolize the .