A 20 mm focal eyepiece with an extremely wide 100 ° field of view. Outstanding quality and reasonable price. Only from William Optics! • standard of binding: 2 " • extremely wide field of view (AFOV equal to 100 degrees) • Fully Multi Coated optics (fully covered) for great transmission • reduced chromatic aberration • great contrast thanks to excellent blackening, no ghosts or flares, beans, etc. artefacts • parchocal with the other two glasses from the series • beautifully finished housing, anodised, with a filter thread 2 years


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