We stock a wide range of APM's largeapochromatic binoculars, from 82 to 150mm in aperture with interchangeable eyepieces for different magnifications. APM binoculars use high end ED glasses for superior correction. Made from magnesium alloy and nitrogen-filled, APM binoculars are exceptional quality instruments. They feature sturdy tripod mounting plates and handles for convenience. These are regarded as some of the finest large aperture astronomical binoculars on the market.