These 1.25″ 68° Degree Ultra Wide Angle Eyepieces provide ultra wide long eye relief with a comfortable wide field for planetary and deep space observation. Super wide 68 degree apparent field offers expansive views of the moon, star clusters and the Milky Way. It helps gets sharpness, high contrast and orthoscopic images. It can be used in any astronomical telescope that accepts standard 1.25″ eyepieces.