Discover our Solar System with the Celestron AstroMaster 90EQ! You'll be ready to observe in minutes thanks to the quick and easy no-tool setup. The 90EQ provides bright clear images of the Moon planets star clusters and more for great night-time viewing.The AstroMaster mount comes with two slow motion control knobs that allow you to make fine pointing adjustments to the telescope in both Right Ascension and Declination axes also referred to as RA and DEC.Manual German equatorial mount with setting circles - to locate and track sky objectsAdjustable full height steel tripod with deluxe accessory trayQuick and easy no-tool setupAccessories include a 20mm and 10mm eyepiece erect image diagonal and a finderscopeDownload Starry Night Basic Software with a 36 000 object database printable sky maps and enhanced images including 3D renderings of stars exoplanets and galaxiesAccessories include a 20mm and 10mm eyepiece erect image diagonal and a finderscope. The two eyepieces offer different magnifications for low and high-powered views.Optical Design: RefractorAperture 90mm: (3.54"")Focal Length: 1000mm (39.37"")Focal Ratio: f/11Focal Length of Eyepiece 1: 20mm (.78"")Magnification of Eyepiece 1: 50xFocal Length of Eyepiece 2: 10mm (.4"")Magnification of Eyepiece 2: 100xFinderscope: Built-on StarPointerStar Diagonal: Erect Image Diagonal - 1.25""Highest Useful Magnification: 213xLowest Useful Magnification: 13xLimiting Stellar Magnitude: 12.3Resolution (Rayleigh): 1.55 arc secondsResolution (Dawes): 1.29 arc secondsLight Gathering Power (Compared to human eye): 165xOptical Coatings: Multi CoatedOptical Tube Length: 914mm (36"")Mount Type: CG-3 EquatorialHeight adjustment range (includes mount and tripod): 812.8mm - 1295.4mm (32"" - 51"")Tripod Leg Diameter: 31.75mm (1.25"") steelAccessory Tray: YesTripod Weight: 7.6 lbs (3447.3 g)Slew Speeds: ManualDovetail Compatibility: CG-3 saddle plateSoftware: Starry Night Basic Edition | SkyPortal App Included Items: Optical tube | Tripod and mount (preassembled) | 20mm eyepiece | 10mm eyepiece | Red-dot finderscope | Manual