I'm not quite sure if that areobreaking can be seen so easily by the probes like a deep flying orbiter at night. MGS is at a pole to pole orbit reaching its deepest point at the transision between sunlight and shadow portion of the planet. That's about 6:00 PM local time and in the twilight zone. It's going to change that by one hour per month and reaches its periapsis right now at about 5:30 PM local time, as aerobreaking had been suspended between October 11th and November 7th. During that time the Olympus Mons image was taken. It had been supposed that GMS will reach it mapping orbit next March at a periapses of 2:00 P.M. local time, but now some changes has been set, so GMS will reach its mapping orbit one year later and its periapses will be then at 2:00 A.M.
I'm sure, that our probes will be able to see GMS earlier than that, even still in his aerobreaking period, though GMS it not glowing like a meteorite, while doing so. Anyway, I will transmit the GMS data to the probes, when they will have a chance to see it. The aerobreaking itself lasts only for about 5 minutes, so they must know exactly, which section they have to observe.
Right now the orbiter is at an altitude of more than 40.000 km, will reach its apoapsis Tuesday at PST 1:08 A.M at 43.477km and will reach its periapsis at UTC 5:59 P.M. after an period of 33.708 h at an altitude of 122,5 km.
However, that is too far off Olympus Mons, as sunset 5:51:15 P.M local time at the Fortress is at PST 10:48:03 A.M. -- I'll keep checking on that and
keep my ears walking
Al-Q