Description: Refraction / focal length: 360mm, optical aperture: 50mm,Can be set 18X 27X 60X 90X Theoretical resolution: 2.000 arc seconds,Tripod up to 35 cm Active aperture: 50mm (2.4 ").Focal length: 360mm.f / 7.Tilt mirror: 90 Standard 0.965 inch package includes:Eyepiece: SR4mm, H20mm, 3x Barlow lens.The maximum magnification of the item: 90 times (lens focal length / eyepiece focal length * several baro times = maximum magnification) Telescope Adjustment - The beginner telescope can be easily adjusted different angles, offer you see the Starry sky and landscape clearly. Easy to assemble and disassemble. Specification: Item: F36050 Astronomical Telescope Clear aperture: 50 mm (2.4'' Approx.) Focal distance: 360 mm(f/7) the degree Objective Len:90 Degree the Height Aluminium tripod:38cm Distinguishability: 2.000 second of arc (Theoretically speaking, it's able to distinguish two goods between 0.97 cm over 1000m distance.) Max Multiples: 90 times ---- Be able to see the moon clearly For the other possible Multiples: (the focal distance is 300mm) Eyepiece H 6mm Only = 360/6 = 60 times. with 1.5 times erecting lens=50*1.5 =90 times (Good for Observing the moon at night.) Eyepiece H20mm Only = 360/20= 18 times. with 1.5 times erecting lens=18*1.5=27 times (Good for obeject observing at day time,like bird seeing, animal spotting,etc.) Package Includes: 1 Set Beginner Astronomical Telescope