120° 9mm Waterproof EyepieceFeatures The Explore Scientific 9mm 120 Series eyepiece really is in a class by itself. The 120 apparent field of view is unlike anything you have experienced before. Normally, when we look through hyper wide field eyepieces, we see a huge swath of the night sky at low magnification. With the 9mm 120, however, you see even more universal real estate, but you also see the main attraction, whether it is a nebulae, a galaxy, or a star cluster, close up