They've only sent back two images so far, I think we can assume that the bandwidth of the signal is very low, at that distance. At the moment it's better to use

They've only sent back two images so far, I think we can assume that the bandwidth of the signal is very low, at that distance. At the moment it's better to use it for sending data than pictures. Perhaps they will have stored something like that locally, and can transmit them later.