Ключевые слова: army, astronomy, background, blue, circle, closeup, contemplation, contemporary, day, discovery, equipment, exploration, eye, eyepiece, eyesight, focus, forward, future, glass, handheld, isolated, journey, large, leisure, lens, looking, magnification, metal, modern, mono, monocular, object, optic, optical, personal, reflection, science, scope, single, spyglass, surveillance, telescope, tool, travel, tripod, view, watching, white, zoom,