Tele Vue 13mm Nagler Type 6 Eyepiece - 1.25" - EN6-13.0 Imaging Cameras Eye Relief: 12

Eye Relief: 12

Anyone telling you otherwise is using outdated information

More importantly the name was chosen to give recognition to Paul

Multi-Coated optics for sharp

BaK-4 prisms and fully multi-coated optics utilizing Celestrons proprietary XLT coating technology

Tele Vue 13mm Nagler Type 6 Eyepiece - 1.25" - EN6-13.0 Imaging Cameras Eye Relief: 12About 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,