Discovery Kids Student Telescope 50mm. Easy to use and affordable the refractor telescope has an aperture of just under 2 inches and comes with two interchangeable eyepieces that provide Magnification of 18x and 28.8x Specifications for Discovery Kids Student Telescope: Manufacturer: Discovery Kids Color: Gray/Orange Magnification: 30 - 40 x Objective Lens Diameter: 50 mm Objective Aperture: 50 mm Focal Length: 600 mm Finderscope: Red-dot Condition: New Included Accessories: red dot viewfinder star map diagonal two Eyepieces Magnification Type: Variable Package Contents: Discovery Kids Student Telescope Discovery Kids 44-10050: Student Telescope 50mm