An Optical Telescope is a type of telescope that uses lenses or mirrors to gather and focus light, allowing astronomers to observe distant celestial objects. These telescopes can vary in size and design, from small, portable models for amateur astronomers to large observatories that study the universe's most distant galaxies. Optical telescopes have played a crucial role in advancing our understanding of the cosmos. They enable the observation of planets, stars, and galaxies, providing valuable data that has led to significant discoveries in astrophysics and cosmology. Their ability to capture light makes them essential tools for exploring the universe.