That and...
...before, the best we had was MOC. Now we've got HiRISE with much greater resolution. Of course, HiRISE has a small field of view. So it has to have very accurate pointing info, as you noted.
Space/Science » in reply to A signal
...before, the best we had was MOC. Now we've got HiRISE with much greater resolution. Of course, HiRISE has a small field of view. So it has to have very accurate pointing info, as you noted.