R50360 Astronomy Telescope for Children and Adults, 50mm
R50360 Astronomy Telescope for Children and Adults, 50mm Aperture, 360mm Refractor, Portable Travel Telescope for Beginners with Tripod and Backpack Gree Specifications: Optical System: Refractive Aperture: 50mm Focal Length: 360mm Focal Ratio: F7.2 Eyepiece 1: 20mm Magnification: 18x Eyepiece 2: 6mm Magnification: 60x Zenith Mirror: 90° Zenith Mirror Optical Coating: Anti-reflective coating Magnification Filter: 3x Exit Pupil Diameter: 0.83-2.8mm Coating: Multi-layer broadband green coating Light Gathering Power: 51x Resolution (Rayleigh): 2.78 arc seconds Resolution (Dawes): 2.32 arc seconds Limiting magnitude: 11.0 Tracking system: Theodolite Vertical adjustment: approx. 145° Horizontal adjustment: 360° Tripod: Aluminum alloy (26.5-64cm telescopic) Combined 3X magnification: 54x/180x...