Docter Optic 20-50x80 (80/500) ED Vario Aspectum Binocular w/ tripod plate & hard case USED. Docter Optic Aspectum 80mm ED binoculars are high performance twin telescopes ideal for hunting, forestry, expeditions, sports, mountain tours, hiking, wildlife observations, ornithology, and day time far away objects need to be viewed for long periods of time. This model has ED glass in the objective lens.