Celestron SkyMaster 15-35x70 Zoom BinocularsThe Celestron SkyMaster 15 35x70 Zoom Binoculars are superb porro prism binoculars for landscape and celestial viewing. The 70mm multi coated objective lenses transmit a large portion of incoming light and the BaK 4 prisms offer high resolution and contrast. The 15 35x magnification provides excellent viewing freedom for zooming in closely on a target or maintaining a wide 111' field of view at 1000 yards. Though this binocular is a bit on the heavy