Resolution in large earthbound telescopes is limited by atmospheric turbulence and vibrations. During the last 15 years PI has designed several large-aperture tip/tilt systems for image stabilization. Piezoelectrically-driven active secondary mirrors can improve the effective resolution up to 1000% by correcting for these image shifts in real time, especially during long integrations with weak light sources.
PI's hexapod 6-axis micropositioning systems are key components for the precise alignment of active mirrors.
PI precision actuators provide superior performance and lifetime and have been used in large telescopes such as SALT.