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Home Eyepieces Explore Scientific Eyepieces Explore Scientific 20mm 100 degree Nitrogen purged Eyepiece
This 20mm eyepiece has a 100 degree Apparent Field Of View and the body of the eyepiece is purged and waterproof preserving the internal elements to remain as pristine as the day they were assembled. The sealed, dry environment is impervious to internal fogging and contaminants such as fungus growing in between the lens elements. Delivery timeDelivery is usually around five business days with this product.
The 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 the eyepiece is tested in one meter of water for 30 minutes. The eyepiece features EMD (Enhanced Multilayer Deposition) Coatings.Optical Design: 9 Elements; Combination of: Dense Crown, Light Crown, Dense Flint, and Lanthanum Optical GlassesFocal Length: 20mmEye Relief: 14.5mmApparent Field: 100°Coatings: EMD (Enhanced Multilayer Deposition) CoatingsBody: Anodized Black Aluminum; Laser-Etched Description and Serial Number; Rubber Grip: Internally O-Ring Sealed and Nitrogen PurgedBarrel: Stainless-Steel, 2-inch, Double Taper, Accepts Standard 2-inch FiltersEyecup: Rubber Folding TypeEyepiece Weight: 2lbs
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