62 degree apparent field of view; Super wide angle 62 degree apparent field of view and available in 1.25" 10mm formats to cover a wide range of magnifications and true fields of view HD eyepiece; The eyepiece of high-definition; It can increase the magnification of the telescope combination Standard 1.25" fitting diameter; Compatible with any telescope that accepts 1.25” eyepieces High Performance; Sharp optimal performance with low chromatic aberration; Make you get a virtually distortion free image Light in weight for their size; making for easier scope balancing; The optical quality is very good.; The view is crystal clear and no apparent distortion