Explore Scientific 82° N2 Eyepiece 18mm (2")
18mm Argon purged high performance Explore Scientific 2" eyepiece with 82° apparent field
- Waterproof, Argon purged and sealed against dust
- Very large and sharp 82° field
- EMD-fully multi-coated with blackened lens edges
- All eyepieces of this series are parfocal
Explore Scientific 82° Series extreme wide field eyepieces are optimized to produce high contrast, high resolution, and superior flat field characteristics.
The visual effect of these eyepieces with their long eye-relief and their 82° apparent field is truly a full-immersion experience. Your eye is relaxed, allowing you to easily use the "averted vision" technique to study faint details across a huge field-of-view. The 82° Series eyepieces come with a twist-up rubber eye-guard that raise to the desired height for the comfort of the observer, and as experienced astronomers know, eye comfort is critical when trying to observe at the visual limits of the telescope. To keep internal reflections to a minimum, all internal surfaces of the eyepiece barrel are flat black, as well as the edges of the lenses themselves to minimize the scattering of light within the lenses themselves.
All 82° Series eyepieces are fully multi-coated and edge-blackened to produce maximum contrast.
Specifications of Explore Scientific 82° N2 18mm Eyepiece
Focal length: 18mm
Eyepiece barrel diameter: 50.8mm / 2"
Length of eyepiece barrel: 28mm
Nitrogen or Argon purged: yes
Foldable rubber eyecups: yes
Construction: 6 lenses in 4 groups