Pretty sure the Emperor’s tower is supposed to be at or near the North Pole of the DSII
I had always thought it was closer to the South Pole, as the Emperor points upwards (roughly ten o’clock) when gesturing to the sanctuary moon, and Luke’s gaze follows in that direction.
Assuming, of course, that DS2 isn’t orbiting upside-down. I thought it was only flipped horizontally in post 😃
From memory he even says, “your friends up there on the sanctuary moon are walking into a trap”, though I’ll have to re-watch it to confirm it. Online quotes record him saying “out there”, “down there” and “up there” depending on which version you read!