66 Degree Ultra Wide Angle Eyepiece: Provide impressive optics with an enormously wide 66 degree apparent field of view (AFOV); Perfect for clearly observing planets or deep sky objects and offering expansive views of moon star clusters and Milky Way
Comfortable Eye Relief & Adjustable Eyecup: Generous 18mm eye relief with 20mm focal length allows comfortable viewing distance during astronomical; fold-down rubber eyecup design more fit the glasses wearer that prevent stray light entering when using
Universal 1.25 inch Compatibility: Equipped with 1.25-inch (31.75mm) compatible with all standard 1.25" focusers of telescope; diagonal mirror ; barlow lens and other telescope accessories; Included standard 1.25” filter thread connect to telescope filter
1.25 inch 20mm plossl eyepiece set; gives the widest viewing field along with extra sharpness and long eye relief
4-element plossl design has a approx 50 degree AFOV; perfect for broad-field lunar observations and medium-sized star clusters and a wide range of cloudy nebulas and deep-sky targets