Interferometer Device Sees Text from a Mile Away

FOCUS Interferometer Device Sees Text from a Mile Away A high-resolution imaging system captures distant objects by shining laser light on them and detecting the reflected light. et al. [1] L.-C. Liu Seeing the small picture. The remote-imaging system (left) shoots eight infrared laser beams (red line added to show the path) at a target (right) in a building 1.36 km away. Light reflecting off the target is collected by the system’s two telescopes. et al. [1] L.-C. Liu Seeing the small picture. The remote-imaging system (left) shoots eight infrared laser beams (red line added to show the path) at a target (right) in a building 1.36 km away. Light reflecting off the target is collected by the system’s two telescopes. × One of astronomers’ tricks for observing distant objects is intensity interferometry, which involves comparing the intensity fluctuations recorded at two separate telescopes. Researchers have now applied this technique to the imaging of remote objects on Earth [1]. Th ... Read full article.