Advanced Optical Accessories: The use of aluminum allows for a longer service life; it with less distortion in the field of view; providing the best in high performance and clarity with low chromatic aberration; giving a virtually distortion-free image
52 Degree Wider Field of View: 56mm focal length for low magnifications and an excellent overview; 52 degree field of view-enjoy observing a large section of the night sky; providing a broader perspective
Standard 2 inch Mounting Diameter: 2 inch eyepiece with 2 inch telescope filter thread; a high performance; comes with a standard 2 inch interface to connect 2 inch focuser of any telescopes or other telescope accessories
100 Percent Brand New and High Quality: Multi-Coated 2 inch 80 degree F15 mm UWA telescope eyepiece; the Ultra-Wide 81 Degree Eyepieces are equipped with plastic case; which can better protect eyepieces and against dust than the cap
6-Elements in 5 Groups Design: Fully multi-coated and soft eyecup; the inside of the adapter is fully threaded to minimize reflections