optical telescope

an astronomical telescope designed to collect and record light from cosmic sources

• reflecting telescope, reflector — optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece
• refracting telescope — optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece

• astronomical telescope — any telescope designed to collect and record electromagnetic radiation from cosmic sources

• eyepiece, ocular — combination of lenses at the viewing end of optical instruments
• objective, object glass — the lens or system of lenses nearest the object being viewed