Alstar Telescope Eyepiece Plossl 1.25 Inch 17mm 50-Degree AFOV Fully Multicoated Optical Lens, 4 Element Design, Wide Field of View, Visual Astronomy Observations, Beginner

1.25 inch Telescope Eyepiece: Threaded for standard 1.25 inch astronomy filters telescopes and telescope accessories highly compatible 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 Wide Field of View : 1.25 Inch 17 mm plossl eyepiece offers a wide field of view and long eye relief ideal for high-precision astronomical observations Comfortable Fold-Down Rubber Eyeguard: Equipped with a fold-down rubber eyeguard, it provides comfort during extended observation sessions Premium Material: Advanced materials and exquisite craftsmanship making products sturdy and long-lasting use;coming with sturdy plastic dust caps-protect the eyepiece from dust and moisture