system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] does Vader think the rebels don't have radar?

In Empire, Vader kills an admiral because he "alerted the rebels to their presence by coming out of lightspeed too close to the system."

But wouldn't that not matter? Surely the rebels have every kind of radar so even if the Empire came in way far out they'd eventually see them. Would that admiral have been killed for coming in too far since the rebels would've put their shield up as soon as they saw them?
gpt
Ships give off Cronau radiation when they exit hyperspace.  It's possible Vader wanted them to exit hyperspace far enough away that the Rebels couldn't detect the Cronau and would have to hit them with a more traditional radar that would be harder to detect them as early.