20x88 binoculars for astronomy Semi-apo tripot objective, 27 layer max-transsuper multi-coating on allair to glass surfaces Inter-changeable eyepieces (standard accessory 20x, optional 26x, 32x) Retractable lens shades Lens covers Removable carrying handle aluminum, 1/4 20 tripod adapter (built-in) Sturdy aluminum construction Comfortable right angle viewing 20x eyepieces has a 52 degree F. O. V., The 32x eyepieces has a 66 degree F. O. V. The eyepieces and objectives are matched to produce superbly sharp images.