Holo-tank

Holo-tanks were devices which projected a holographic image which gave the viewer the impression of being "in" the image. It was a three-dimensional visual projection area resembling a small amphitheater. The holo-tank was completely circular and recessed below the level of the floor. Observers stood around its outer edge and looked into it. Holo-tanks were primarily employed in military command centers to observe tactical movements. Targets were displayed as points of light and located in a true, scaled-down position with respect to some reference point. A three-dimensional grid system, that was superimposed over the holo-tank projection field of regard, allowed for the easy location of targets.
Appearances
Star Wars: The Clone Wars – "Rising Malevolence"
Star Wars: The Clone Wars – "Destroy Malevolence"
Star Wars: The Clone Wars – "Rookies"
Star Wars: The Clone Wars – "Downfall of a Droid"
Star Wars: The Clone Wars – "Bombad Jedi"
Star Wars: The Clone Wars – "Cloak of Darkness"
Star Wars: The Clone Wars – "Dooku Captured"
Star Wars: The Clone Wars – "The Gungan General"
Star Wars: The Clone Wars – "The Hidden Enemy"
Star Wars: The Clone Wars – "Blue Shadow Virus"
Star Wars: The Clone Wars – "Mystery of a Thousand Moons"
Star Wars: The Clone Wars – "Storm Over Ryloth"
Star Wars: The Clone Wars – "Liberty on Ryloth"
- Star Wars: Episode III Revenge of the Sith
- Han Solo at Stars' End
- Star Wars: Episode IV A New Hope (First appearance)
- Otherspace II: Invasion
- Star Wars: Episode VI Return of the Jedi
"Waystation"—The Kathol Rift