Fully-Multicoated Achromatic Design: Featuring a 4-element Plossl optical design with an approximate 50-degree AFOV, perfect for broad field lunar observations; medium sized star clusters; provide a wide range of cloudy nebulas and deep sky targets
1.25 inch Telescope Eyepiece set: Threaded for standard 1.25 inch astronomy filters telescopes and telescope accessories highly compatible; 8 mm 15 mm 40 mm three kind of pass through apertures
Wide Field of View : 1.25 Inch 8 mm 15 mm 40 mm Plossl eyepiece offers a wide field of view and long eye relief ideal for high-precision astronomical observations
The 2x barlow lens is full metal constructed and precisely CNC machined; 1.25 inch Telescope Eyepiece Extension Tube; It provides extra focuser back travel which is often needed for short range terrestrial viewing or astrophotographic applications
Double the power of 1.25 inch telescope eyepiece with the telescope barlow lenses for 1.25 inch eyepieces from Celestron; Orion; Sky Watcher; Meade and most brands of telescope