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Object

Actuator

A close-up view of a precision actuator with a circular lens at its center, showcasing its intricate design and mechanical components against a dark background.

A mechanical device that converts energy into precise physical motion. In spaceborne optics, fine-guidance actuators often use stepper motors or piezoelectric materials to make microscopic adjustments to a mirror's position, tilt, or curvature, compensating for launch stress or thermal expansion.

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