Since 2020, aggregated from related topics
Extremely large telescopes (ELTs) are a type of telescope with an aperture of 20 meters or more, designed to provide higher resolution and sensitivity than current telescopes. ELTs are typically ground-based observatories that are equipped with advanced adaptive optics systems to compensate for atmospheric distortion and improve image quality. These telescopes are used to study a wide range of astronomical phenomena, including the formation and evolution of galaxies, the search for exoplanets, and the study of the early universe. ELTs are at the forefront of astronomical research and are expected to revolutionize our understanding of the cosmos.