Here's a timeline of which cameras should have been active during descent:
Regarding the abbreviated names on that image:
Quote:
There are 5 types of EDL documentation cameras: The Parachute Uplook Cameras (PUCs, quantity 3), the Descent stage Downlook Camera (DDC, quantity 1), the Rover Uplook Camera (RUC, quantity 1), the Rover Descent Camera (RDC, quantity 1), and the Lander Vision System (LVS) Camera (LCAM, quantity 1).
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https://link.springer.com/article/10...14-020-00765-9