PR-80ED-AThe PENTAX PF-80ED-A features a 45-degree slanted lens barrel for comfortable viewing in almost any situation. 

Housed in an exceptionally lightweight magnesium-alloy body Incorporating Extra-low Dispersion (ED) glass elements for optimum optical resolution Large 80mm objective lenses for bright viewing under all light conditions The body incorporates the American standard 1-1/4" diameter eyepiece receptacle, which accepts not only the optional Pentax XW eyepieces, but also other telescope manufacturers' eyepieces on the market

The receptacle has a special "O" ring assembly, which allows the body of the scope to be filled with nitrogen, making it fog proof and JIS Class 6 waterproof A built-in lens shade cuts excessive light and helps to prevent rain and other weather elements from interfering with viewing An extra wide focusing knob is incorporated for effortless focusing

A tripod socket with a click-stop rotation mechanism is available to allow for different viewing angle options Famous Pentax Super-Multi-Coating maximizes light transmission, clarity and contrastAn extendable eyecup allows variable adjustment for up to a full 20mm of eye relief, allowing those wearing eyeglasses the same view as non-eyeglass wearers Equipped with a durable rubber housing to protect against shock and damage

Accepts PENTAX XW Telescope Eyepieces: XW7(71x), XW10(50x), XW14(36x), XW20(26x), and the 20X-60X Zoom Eyepiece.