DESC: "Dobsonian telescopes are recognised within the astronomy hobby as excellent value for the aperture size, and our StarHopper line is as rich in features as it is in value.Our Dobsonian configuration is a Newtonian optical tube mounted on an altazimuth mount. The optical system features a large primary mirror at the bottom of the tube which collects light and concentrates it onto a small secondary mirror, which reflects the light out the side of the tube and into the eyepiece. Best of all, StarHopper Dobsonians are easy to observe with; the user simply navigates through the night sky by manually moving the tube up or down, and left or right."