Astromania 4mm 1.25 Inch Plossl Telescope Eyepiece - Fully Multi Coated 4-Element Plossl Design Telescope Accessory with Standard 1.25 inch Filter Threaded for Visual Astronomy Observations

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 4 mm plossl eyepiece set offers a wider 50 degree field of view and a 4 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