In Star Trek: The Motion Picture, Admiral Kirk holds a large briefing to reveal the threat that the Enterprise will face.
The briefing is interrupted by a distress call from Starfleet's Epsilon IX communications array. It is being attacked by the same energy field (which we later find out is V'Ger) that destroyed the Klingon battle cruiser seen a few moments earlier.
As the array is being disintegrated, we are viewing the events from outside of the array. It is possible that there are external cameras located on the exterior of the array that can see other parts of the array. However, even after the array is completely destroyed, the communication does not end, and the Enterprise crew can still see V'Ger's energy field pulsating on the viewscreen.
During the destruction of the array, what was sending the images to the Enterprise?