Explore Scientific 68° 20mm Eyepiece

Explore Scientific 68° 20mm Eyepiece
- Waterproof Argon Purge
- 1.25" Barrel
Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coatings, Explore Scientific 68Â° Series Argon-Purged Waterproof 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 68Â° apparent field is truly a full-immersion experience. The 68Â° Series eyepieces come with a removeable 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. Protection from the Outdoors - By making the eyepiece body Argon-purged, 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 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. 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. To insure a perfect seal we test every eyepiece in one meter of water for 30 minutes.

Country	USA
Binding	Electronics
Brand	Explore Scientific
EAN	0962392004373
Label	JOC
Manufacturer	JOC
ManufacturerPartsWarrantyDescription	All replacement parts covered while eyepiece is under warranty
Model	EPWP6820-01
MPN	EPWP6820-01
NumberOfItems	1
PartNumber	EPWP6820-01
Publisher	JOC
Size	20mm
Studio	JOC
ReleaseDate	0000-00-00

Explore Scientific 68° 20mm Eyepiece

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