- "Do the sensors detail any instances of ships jumping to lightspeed?"
"None, sir. No instances of Cronau radiation—though the interdiction field would make that a long shot, in any case."
- ―Wilhuff Tarkin and a comm specialist
Cronau radiation was a type of radiation emitted by starships upon jumping into hyperspace, along with an apparent twisting of space. The Imperial-class Star Destroyers of the Galactic Empire were equipped with sensors that could detect Cronau radiations, thus enabling their crews to detail instances of vessels entering hyperspace.