Celestron Astromaster 90EQ Telescope is a powerful telescope scope with an Equatorial mount and comes with 2 Years Warranty If you're looking for a dual purpose telescope appropriate for both terrestrial and celestial viewing, then the AstroMaster 90EQ is for you. Each AstroMaster model is capable of giving optically corrected views of land and sky. The AstroMaster 90EQ telescope produces bright, clear images of the moon and planets. - Quick and easy no-tool setup - StarPointer finderscope - Erect image optics - Ideal for terrestrial and astronomical use - Quick release dovetail attachment - no tool setup - German Equatorial mount with Setting circles - to accurately locate and track sky objects - Rugged pre-assembled tripod with 1.25" steel tube legs - Provides a rigid and stable platform - All coated glass optics for clear, crisp images - Deluxe accessory tray for convenient storage of accessories - BONUS Astronomy Software download with a 10,000 object database, printable sky maps and 75 enhanced images Optical Design Refractor Aperture (mm) 90 mm (3.54in Focal Length 1000 mm (39.37in) Focal Ratio 11 Focal Length of Eyepiece 1 (mm) 20 mm (0.78") Magnification of Eyepiece 1 50x Focal Length of Eyepiece 2 (mm) 10 mm (0.4") Magnification of Eyepiece 2 100x Finderscope Built-on StarPointer Star Diagonal Erect Image Diagonal - 1.25in Highest Useful Magnification 213x Lowest Useful Magnification 13x Limiting Stellar Magnitude 12.3 Resolution (Rayleigh) 1.55 arc seconds Resolution (Dawes) 1.29 arc seconds Light Gathering Power (Compared to human eye) 165x Optical Coatings Multi Coated Optical Tube Length 914 mm (36in) MOUNT INFO: Mount Type CG-3 Equatorial Tripod 1.25in steel tube legs Software Starry Night Basic Edition