The Celestron Ultima-LX 17.0mm Eyepiece is a quality wide angle eyepiece that is versatile and can fit both 1.25" and 2" type telescopes. With 70° of apparent viewing field across the entire Ultima-LX collection, you will really feel surrounded by the viewing experience. It is the ideal eyepiece for deep-space viewing.
This eyepiece features a high-quality optical design that eliminates visual aberrations, resulting in truer colors and a sharper view. This Ultima-LX eyepiece is parfocal with others of the Ultima-LX series, meaning little or no focusing is needed when changing eyepieces within the collection.