The term 'telescope parts' can refer to a variety of components that make up a telescope, such as LENSES. LENSES are an essential part of a telescope, as they are used to focus light and magnify distant objects. LENSES come in a variety of shapes and sizes, and can be made from different materials. They are usually made of glass or plastic, and can be curved or flat. LENSES are used to create images of distant objects, and can be used to observe stars, planets, and other celestial bodies.