All-in-one Explore Scientific 68° 16mm Waterproof Eyepiece Save 65% Now [QT0zOEid]

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Explore Scientific 68° 16mm Argon-Purged Waterproof Eyepiece

Featuring this 68° 16mm Argon-Purged Waterproof Eyepiece by Explore Scientific. This is optimized to produce high contrast, high resolution, and superior flat field characteristics. With advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coatings. A truly full-immersion experience is the visual effect of these eyepieces 68° apparent field and their long eye relief. It has a removable and foldable soft silicone rubber eyecup to deliver outstanding comfort for observers. Eye comfort is critical when observing the telescope's visual limits for experienced astronomers.

In making the eyepiece body Argon-purged, the waterproof eyepiece internal elements will remain as pristine as the day they were assembled - It creates by the protection from the Outdoors. And Because Argon atoms are "larger" than Nitrogen, they are the ones that are less likely to "leak" or diffuse over the life of the eyepiece. Argon's atomic radius is more significant than Nitrogen by 0.13 angstroms and has a larger nuclear 11.2 cubic centimeters/molecule. Compared to Nitrogen, Argon also has a superior inertness that prevents adverse reactions with eyepiece components (Like, i.e., forming few or having no chemical compounds with other elements). This prevents chemical reactions and extends the internal components' longevity with other essential ingredients and contaminants that may be introduced or happen through a weakened seal. 

Lastly, because Argon is less conductive of heat than Nitrogen, It cools slower and buffers the effects of rapid temperature changes in optics. Those dry environments and sealed ones are impervious to internal fogging, and contaminants such as fungus grow between the lens elements. Our 68° 16mm Argon-Purged Waterproof Eyepiece is easier to clean with no risk of the the cleaning solution and migrates from the top of the lens and seeping around edges to trappedbetween elements. And to ensure a perfect seal for 30 minutes, we test every eyepiece in one water meter. Buy to see it for yourself! Add to cart now!