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Explore Scientific - 9mm 100° Series Argon Purged Waterproof Eyepiece - 2"

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The Explore Scientific 9mm 100 degree waterproof eyepiece features advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coatings. The waterproof interior keep the eyepiece free of fog and mildew. Full lifetime warranty!


LIFETIME WARRANTY
SKU: EXP-EPWP100901
Manufactured by:
Explore Scientific
 

Product Description

Explore Scientific 9mm 100° Argon Purged Waterproof Eyepiece - 2"

Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coatings, Explore Scientific 100° 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 100° apparent field is truly a full-immersion experience. The 100° 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.

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 (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. 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. To ensure a perfect seal we test every eyepiece in one meter of water for 30 minutes.

Specifications

Name Explore Scientific - 9mm 100° Series Argon Purged Waterproof Eyepiece - 2"
Manufacturer Explore Scientific
UPC 812257014651
Model EXP-EPWP100901
Manufacturer Part # EXP-EPWP1009-01
Apparent Field of View 100°
Eye Relief 12.5mm
Eyepiece Barrel Size 2"
Field Stop Diameter 15.7mm
Focal Length 9mm
Warranty Explore Scientific STAR Lifetime Warranty (click to read more)

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