Gosky Telescope 1.25" Super Plossl Eyepiece 40mm (SPL Plossl Eyepiece- 52 Degree FOV and 4-Element Design The 1.25" Super Plossl Eyepiece (SPL Plossl Eyepieceseries is designed as high quality eyepieces for planetary viewing and daytime observation . 4 -element premium symmetrical Plossl optical design 52 Degree Field of View (FOV) supplys you a wide view. Comfortable eye relief and extendable twist-up eyepieces are easier and more comfortable, especially for eyeglass wearers. No slip, rubber grip ring for secure handling, even in moist conditions