PRODUCT TITLE\n\nSky Watcher 20mm Ultra Wide Eyepiece 1.25 inch 20618\n\nPRODUCT DESCRIPTION\n\nThe Sky Watcher 20mm Ultra Wide Eyepiece 1.25 inch, let you see more sky at once with their wide 66 degree apparent field of vision and comes with rubber eyecups and a 12-month warranty.\nThis Sky Watcher 20mm Ultra Wide Eyepiece 1.25 inch lets you see more sky at once with their wide 66 degree apparent field of vision.\nThe Ultra Wide Eyepiece with their long eye relief eyepieces and multi-coated design, offer crisp visuals throughout the entire field. Rubber eyepieces are used for comfortable viewing and to reduce glare and block out unwanted light.\nTechnical Specifications\n Apparent field of view - 66\u00B0\n Barrel Size 1.25 in (32mm)\n Focal Length 20mm  - Eye Relief - 18mm\n Focal Length 15mm  - Eye Relief - 13mm\n Focal Length 9mm    - Eye Relief - 15mm\n Focal Length 6mm    - Eye Relief - 14.8mm\n Screw-off rubber eye cup\n Optical Coating - Mu.