Bruce Murray Space Image Library

Chang'E 2 second orbit trim maneuver

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On October 9, 2010, Chang'E 2 performs its second luanr orbit trim maneuver, an event witnessed by an engineering camera. Before the maneuver starts, the spacecraft executes a sequence of controlled turns, causing the Moon to swing through the field of view. The firing of the engine begins just after the terminator passes out of view (from the camera's point of view). As the spacecraft drops completely into the lunar shadow, the camera's automatic exposure setting adjusts brighter, making part of the spacecraft visible in light emitted from the glowing thruster.