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Explore Scientific 68 Degree Eyepiece Kit

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Regular Price: $649.99

Special Price $599.99

Availability: More on the way

Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coatings, Explore Scientific 68° Series™ Argon-Purged Waterproof extreme wide field eyepieces are optimized to produce high contrast, high resolution, and superior flat field characteristics. 
Our Product #: ES68KIT
Explore Scientific Product #: ESWP 68° Kit
 

Product Description

Explore Scientific 68° Series™ Argon-Purged Waterproof extreme wide field eyepieces are optimized to produce high contrast, high resolution, and superior flat field characteristics. They use advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coatings to provide a visual effect that is truly a full-immersion experience. The long eye relief 68° Series eyepieces come with a removable and foldable soft silicone rubber eyecup 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.

Sealing the eyepiece body and then purging it of all moisture with Argon, assures that the waterproof eyepiece internal elements will remain as pristine as the day they were assembled.

Argon atoms are " larger" than that of Nitrogen and therefore they are less likely to "leak" or diffuse their way through the seals over the life of the eyepiece. The atomic radius of Argon is larger than Nitrogen by 0.13 angstroms and has a larger atomic volume by 11.2 cubic centimeters/molecule. Argon also has superior inertness vs Nitrogen (i.e. forming few or no chemical compounds with other elements) that prevents adverse reactions with eyepiece components and therefore extends the longevity of the internal components, and also prevents chemical reactions with other elemental contaminants that may be introduced through a weakened seal. And, finally because Argon is less conductive of heat than Nitrogen, Argon cools slower thereby buffering the effects of rapid temperature changes of the optics.

The sealed, dry environment is impervious to internal fogging and contaminants such as fungus growing in between the lens elements. Our waterproof eyepiece is easier to clean, and there is no risk of cleaning solution migrating from the top of the lens and seeping around edges to be trapped in between elements.

This Explore Scientific 68° eyepiece kit includes an 68° 16mm, 68° 24mm and 68° 34mm Argon-Purged Waterproof Eyepieces and a soft sided case. These eyepieces are individually boxed in our Will Tirion "famous" star map box along with the soft-sided case inside an outer box. 

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