Orion 27192 XT4.5 Dobsonian Telescope and Beginner Barlow Kit 114mm (4.5") aperture and 900mm focal length Dobsonian telescope provides great views of lunar craters, planets, bright nebulas and galaxies Includes the Orion Beginner Barlow Kit - A great value on two of our most popular items for novice backyard astronomers Included Orion 2x Shorty Barlow Lens doubles the magnification of virtually any 1.25" eyepiece, adding magnification options to your telescope right out of the box The included Beginning Stargazers Toolkit provides plentiful reference material for nighttime observing and a handy red LED light to see them clearly An affordable and value-packed telescope and accessory kit perfect for beginning astronomers!