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The Bresser 20x80 Astro Porro binoculars are ideal for astronomical observations. The 20x magnification and the large 80 mm lens opening with multi-coated BaK-4 lenses guarantee a clear, high-contrast and detailed image. The percentage of light that falls into the eye is considerably higher than with smaller binoculars. With these binoculars you can even look in bright night light. The binoculars are robust and strong, so that the binoculars can also withstand shocks and vibrations. Ultra-modern optical technology, inspired by unsurpassed sharpness with a brilliant visual image result. Fully dioptric adjustable eyepieces allow you to adjust the binoculars to your personal vision. The extended center axis is equipped with a tripod connection. Optical design Porro, Coating of the optics Fully coated, green, Prisms BaK-4, Magnification 20x, Objective lens diameter 80 mm, Objective lenses 3 (achromatic), Twilight number 40, Field of view at 1000 meters distance 56 m, Dimensions 330x115x235mm, Total weight (without packaging) 2130 grams, Focusable from 30 meters, Tripod connection Included, Warranty 2 years. Aluminum tripod and carrying bag. Tripod with 2-way tilt, loadable up to 3 kg, continuously adjustable in height from 63.5 cm to 171 cm, individually adjustable legs for uneven terrain, folded about 70 cm / weight: only 2 kg, incl.: tripod + head, quick-release plate, bag.