Explore Scientific 68° Series 16mm Waterproof Eyepiece

Description Utilizing advanced computer design, a combination of low dispersion and high refractive index optical glasses, and robust multilayer deposition coatings, Explore Scientific's 62° Series Argon-Purged Waterproof extreme wide field eyepieces are engineered to deliver high contrast, high resolution, and exceptional flat field characteristics. Experiencing the visual impact of these eyepieces, with their extended eye relief and expansive 68° apparent field, is truly an immersive encounter. The 62° Series eyepieces maintain parfocality (consistent focus regardless of focal length) and feature a removable, foldable soft silicone rubber eyecup for observer comfort. As seasoned astronomers know, eye comfort is crucial when pushing the visual limits of a telescope. Outdoor Protection - By purging the eyepiece body with Argon, the internal elements of the waterproof eyepiece remain as pristine as the day they were assembled. Argon atoms are larger than Nitrogen, reducing the likelihoo