Orion's new ultra-wide angle Lanthanum eyepieces are sure to fill your visual astronomy needs, stellar optics and coatings combining to provide only the best for your enjoyment. The lanthanum glass utilized in this eyepiece helps to eliminate color-fringing and any kind of chromatic aberration, providing true-color views with high contrast and resolution. The luxurious 80-degree field of view is something that has to be experienced to fully communicate, providing a truly immersive viewing experience in regards to the night sky as a whole.