Celestron Omni series eyepieces allow you to dial in the right magnification for clear and sharp images of astral bodies. The 52 degree apparent field of view in this eyepiece is perfect for viewing the Moon, planets and deep-sky objects. To help with image quality, Celestron has used a premium 4-element optical set that is finished with multiple layers of high-transmission coatings. For better contrast during viewing, the edges of the optics have been blackened. The exterior of the eyepiece is almost as beautiful as the night sky itself. The aluminum body has gone through a 2-step anodizing process for a smooth matte finish that resists reflections and glare.