Celestron AstroMaster 90 AZ Refractor Telescope Altazimuth. The Astro Master 90 AZ Telescope by Celestron produces bright and clear images of the Moon and planets through the telescope 's Fully Coated Lens. The Refractor Telescope has a 90mm Lens giving the user a larger lens than the AstroMaster 70mm AZ Telescope. This larger lens will allow more light through when viewing distant objects such as the moons of Jupiter and the rings of Saturn. Also these Celestron Telescopes come with two eyepieces of 50X and 100X magnification which can pull in objects both near and far away. Celestron AstroMaster 90 AZ Telescopes have an Altazimuth Mount that allow the user to easily move the telescope up and down or left and right. This alt-az mount also makes the telescope easier to move when viewing terrestrial objects. In addition these Celestron AstroMaster Telescopes are very child friendly with its Refractor design making them easy to maintain and capable to withstand continuous use. These Telescopes come with a Tripod with 1.25" thick steel legs providing a rigid and stable platform. These features of the Celestron AstroMaster 90 AZ Telescope 21063 make it a great telescope for beginners and intermediate users. The Celestron AstroMaster 90 AZ Altazimuth Telescope Refractor 21063 is also available with an Equatorial Mount (Model #21064) Specifications for Celestron AstroMaster 90 AZ Altazimuth Telescope Refractor 21063: Optical Design: Refractor Aperture: 90 mm (2.76 in) Focal Length: 1000 mm (35.43 in) Focal Ratio: 11.11 Eyepiece 1: 20 mm (0.79 in) Magnification 1: 50 x Eyepiece 2: 10 mm (0.39 in) Magnification 2: 100 x Mount: Altazimuth Optical Coatings: Fully Coated Weight: 20 lb (9.07 kg) Warranty: 2 years Features of Celestron Astro Master 90 AZ Alt-az Telescope Refractor 21063: Dual-purpose ideal for terrestrial and astronomical use All coated glass optics for clear crisp images Permanently mounted StarPointer Altazimuth (Alt-az) mount for easy control Pre-assembled tripod with 1.25" steel legs Deluxe accessory tray for convenient storage "The Sky" Level 1 planetarium software with 10000 object database Package Contents: Celestron AstroMaster 90 AZ Altazimuth Refractor Telescope 21063 Tripod Planetarium software Specifications for Celestron AstroMaster 90 AZ Refractor Telescope Altazimuth 21063: Manufacturer: Celestron Included Accessories: Standard Features of Celestron AstroMaster 90 AZ Refractor Telescope Altazimuth 21063: Quick and easy no-tool setup Permanently mounted StarPointer Erect image optics - Ideal for terrestrial and astronomical use Quick release dovetail attachment - no tool setup Deluxe accessory tray for convenient storage of accessories TheSkyX - First Light Edition astronomy software with a 10000 object database printable sky maps and 75 enhanced images Celestron AstroMaster 90 AZ Refractor Telescope Altazimuth 21063