Celestron Travel Scope 70 DX Portable Refractor Telescope

Optical Design Refractor Aperture (mm) 70 mm (2.76 in) Focal Length 400 mm (15.74 in) Focal Ratio 5.7 Focal Length of Eyepiece 1 (mm) 20 mm (0.78 in) Magnification of Eyepiece 1 20 x Focal Length of Eyepiece 2 (mm) 10 mm (0.40 in) Magnification of Eyepiece 2 40 x Finderscope 5x24 Highest Useful Magnification 168 x Lowest Useful Magnification 10 x Limiting Stellar Magnitude 11.7 Resolution (Rayleigh) 1.98 arc seconds Resolution (Dawes) 1.66 arc seconds Light Gathering Power 100 x Optical Coatings Fully Coated Warranty 2-year Telescope Warranty Optical Tube Length 431.8mm (17") Optical Tube Diameter 98.4mm (3.87") Optical Tube Weight 1.5 lbs (.68 kg) Mount Type Manual Alt Azimuth Height Adjustment Range (includes mount and tripod) 558.8mm 1320.8mm (22"-52") Tripod Leg Diameter 558.8mm - 1320.8mm (22"-52") Tripod Leg Diameter 31.75mm (1.25") Aluminum Accessory Tray Yes Slew Speeds Manual Tripod Weight 1.8 lbs (.81 kg) Total Kit Weight 3.3 lbs (1.5 kg) Smartphone Adapter Info: Phone Compatibility: Any smartphone Compatible Optics : Fits all 1.25" eyepieces or any eyepiece with an outside diameter of 45mm or smaller Dimensions: 177.8mm x 101.6mm x 38.1mm (7" x 4" x 1.5")