Product Description If you're looking for a dual-purpose telescope appropriate for both terrestrial and celestial viewing, then the AstroMaster Series is for you. Each AstroMaster model is capable of giving correct views of land and sky. The AstroMaster Series produce bright, clear images of the Moon and planets. It is easy to see the moons of Jupiter and the rings of Saturn with every one of these fine instruments. For views of the brighter deep space objects like galaxies and nebulae, we recommend the larger aperture and light gathering ability of the Newtonian reflectors.  Optical system: refractive Caliber: 90mm Focal length: 1000mm Focus ratio: 11.11 Eyepiece 1: 20mm Magnification 1:50 x Eyepiece 2: 10mm Magnification 2:100 x Finder mirror: red dot finder Zenith mirror: 1.25 inches just like a zenith mirror Base: CG-3 Equatorial Mount Main barrel connection: dovetail board Tripod: 1.25" stainless steel legs Total weight: 12.25kg Maximum effective ratio: 213x Limit star: 12.3 Resolution (Rayleigh limit): 1.55 arc seconds Resolution (Du's limit): 1.29 arc seconds Light collection: 165x