Astromania 1.25" 20mm Plossl Telescope Eyepiece 4 Element Design Threaded for Standard 1.25inch Astronomy Filters

Premium Optical Device: Aluminum alloy material is used to make it last longer; perfect for broad-field lunar observations; medium-sized star clusters and a wide range of cloudy nebulae; obtaining better observation results during astronomical journey 50 Degree Field of View: 1.25 inch 20 mm plossl eyepiece set offers a wider 50 degree field of view and a 20 mm focal length for observing larger objects; giving the wider view field along with extra sharpness and long eye relief Fully Muti-Coated Optical Lens: 4-Element Optical Lens; providing bright; sharp images and excellent color correction and the fully coated groups on each lens surface maximize light transmission; contrast; and image clarity Wide Range of Compatibility: Standard 1.25 inch female thread can be connected with 1.25 inch focuser of telescope or any other 1.25 inch telescope accessories; threaded for standard 1.25 inch astronomy filters and barlow lens Exquisite Detailed Design: Fold-down rubber eyeguard offers a soft cushioned surface; the matte blackened lens edges effectively prevent stray light; coming with sturdy plastic dust caps-protect the eyepiece from dust and moisture