Tele Vue 13mm Nagler Type 6 Eyepiece - 1.25" - EN6-13.0 Celestron X-Cel LX Eyepieces The high quality of Baader

The high quality of Baader Planetarium filters permits stacking with no image degradation

72 degree apparent field of view eyepieces

Waterproof and fully rubber armored

Machine threaded a fully blackened for maximum contrast

Tele Vue 13mm Nagler Type 6 Eyepiece - 1.25" - EN6-13.0 Celestron X-Cel LX Eyepieces The high quality of BaaderAbout the TeleVue 13mm Nagler Type 6 Eyepiece 1. 25" The 7 element, TeleVue 13mm Nagler Type 6 design is based on the original patented Nagler design. This new 7 element TeleVue Telescope Eyepiece design update for the short focal length Nagler deserves its own designation. Using different exotic materials, coating processes and design ingenuity, Al has massaged more eye relief, contrast, and true field of view into the shorter focal length Naglers,