Orion StarBlast 90mm AZ Telescope & Beginner Barlow Kit 90mm (3.5") aperture and 660mm focal length telescope provides nice views of a wide variety of objects in the night sky Easy-to-operate altazimuth mount equipped with slow-motion controls for convenient tracking of objects as they appear to move across the sky Included Shorty 2x Barlow doubles the magnification of both included eyepieces Use the included Star Target Planisphere and MoonMap 260 to plan stargazing sessions The included Discover the Stars book is a wonderful guidebook for beginning amateur astronomers