Yes, there is some latency there, but it's very short. In the picture I showed you there are some ground stations. They're in the far north of Canada and also in the south. In fact, we're negotiating at the moment to put one down in the Antarctic.
What happens is that as the spacecraft fly over, they downlink the data and then it goes through a fibre optic cable back to the operations centre. So it's a very small period of time between when the image is gathered and when the information gets back to the operations centre.