Orion 5.1mm Epic ED-2, 1.25" Long Eye Relief Eyepiece with 55 Degree Wide Field of View.

The Orion 5.1mm Epic ED-2 Eyepiece features comfortably long eye relief, a wide 55° apparent field and brow-raising resolution. The "ED" stands for "Extra-low Dispersion" optical glass, a special grade of glass that boasts superior refractive properties compared to standard optical glass. In fact, ED glass is the same type used in many expensive camera lenses and high-end refractor telescopes costing several thousand dollars.

An Orion exclusive, this Epic 1.25" eyepiece features a six-element lens design in which two of the elements are crafted from ED glass. This allows the Epic eyepiece to provide a luxurious 20mm of eye relief with remarkably reduced chromatic aberration and excellent sharpness. Long eye relief means that even if you wear eyeglasses, you can take in the full, unconstricted field of view. Which is a generous 55° - a wider apparent field than that of Plossl eyepieces. This eyepiece sports a nice, wide eye lens. The eyepiece is fully multi-coated (every air-to-glass lens surface is multi-coated) for maximum image brightness and the lens edges are blackened for improved contrast.

The Epic eyepiece series is parfocal, so little or no refocusing is needed when switching from one Epic eyepiece to another. The eyepiece housings are precision machined from aluminum and clear-anodized to a lustrous finish. A black rubber traction ring ensures a secure grip and a soft rubber eyeguard helps position your eye and block out stray light. The barrel features a setscrew recess for added security and it's threaded on the inside to accept 1.25" filters. The eyepiece comes with two end caps and a durable plastic case. This Epic eyepiece is ideal for viewing all types of astronomical objects, from planets to nebulas and galaxies.