Celestron Omni XLT 120mm Refractor Telescope 21090 is a versatile telescope with high quality optics and components, perfect for users of any level. The Celestron Omni XLT102 Telescope by Celestron has a 102mm Lens, the largest lens of a Refractor Telescope in the Omni XLT Series. This 120 mm Lens gives a superb image of the Moon, Saturn and its rings, Jupiter and its moons, nebulae and star clusters. Celestron Omni XLT Series Telescopes have StarBright XLT Optical Coatings that enhances light transmission, providing maximum contrast and image sharpness. The StarBright XLT Coatings also present a clear an unblurred image. This telescope is a Refractor Telescope making it easy to maintain with its enclosed lens, and also making it great for terrestrial viewing. These Celestron Telescopes have a 25mm multi-coated eyepiece that is capable of a high 40X magnification. The Celestron Omni XLT 120mm Telescope also features the stable platform of the CG-4 German Equatorial Mount. This Equatorial Mount is responsible for accurately locating and tracking objects due to its setting circles and slow motion controls. Holding up these high quality components is the telescope 's heavy duty tripod that features 1.75" stainless steel legs. The Celestron Omni XLT102 Telescope is also an ideal telescope for astrophotography. When used with the optional dual-axis motor drive (Model #93522) and the polar axis finder (Model #94221) to track objects for long exposure photography, these Telescopes can produce superior quality photographs. With these features of high quality optics and materials, the Celestron Omni XLT 120mm Refractor Telescope 21090 will ensure stability, durability, and will give the user a lifetime of enjoyment in astronomy.