Telescope Optics Measurements

4D PhaseCam Twyman-Green interferometers are the industry standard for measuring concave primary and secondary mirrors. Vibration insensitivity enables measurements across long standoff distances without isolation.

The NanoCam HD measures roughness directly on the optic or on robotic positioners to ensure surface quality at every stage of polishing and coating.

PhaseCam systems can measure modal response to input signals and external vibration to verify control systems for adaptive optics. In the past, to measure the modal response of an adaptive optic to changes in the actuators, sensors have been used to measure movement at individual points on an optic—a slow, low-resolution solution. PhaseCams measure adaptive optics nearly instantaneously, as they actuate, verifying and calibrating the response of the actuators.

Recording of adaptive optic, as it is actuated.