The newly enhanced X-Cel LX eyepiece series is what you"ve been waiting for in a high quality eyepiece for planetary viewing. With a brand new sleek, robust design and a twist-up eye guard, these eyepieces are especially designed for comfort and ease of use. They also have a wide 60° field of view and 6-element fully multi-coated optics for magnificent wide field performance. X-Cel LX eyepieces are parfocal and require little to no focusing when changing from low to high power.