Esta é Crusade , um spin-off de curta duração da Babylon 5.
Excalibur features energy and particle beam weapons. The main guns operate at two main power levels. "Level One" provides beams with little more firepower than a White Star. "Level Two" is much more powerful weapon, reverse engineered from Vorlon lightning cannon technology. [...] Firing this titanic weapon drains all the ship's power and the "Excalibur" is unable to maneuver, fire weapons or use long-range scanners for approximately one minute afterward.