20MM 100° ÉTANCHE / WATERPROOF
The development of the Explore Scientific 20mm 100° Series Nitrogen-Purged Waterproof™ Eyepiece was a collaborative effort of astronomers and engineers who tested the prototypes again and again, in the field and in the factory to make refinements to produce the final production eyepiece.
Like all Explore Scientific eyepieces, the lens elements of the 100° eyepiece are meticulously cleaned and aligned before being installed in their precision machined lens barrels.
Each lens and lens grouping have EMD™ (Enhanced Multilayer Deposition) Coatings and are edge-blackened to eliminate light scatter and maintain image contrast.
Contrast is further enhanced with baffles that mask and deflect unwanted stray light. Each optical surface is meticulously cleaned before and during assembly of each eyepiece.
This eyepiece with its huge apparent field of view not only gives the observer a panoramic visual experience, but relax the eye so the observer could pay attention to subtle details for extended periods.
Each 100° Series Nitrogen-Purged Waterproof eyepiece is internally sealed and purged with inert, dry nitrogen gas to prevent internal fogging, to halt the intrusion of fine particulates and fungus, and to maximize the life of the internal coatings.
To make sure, every 100° eyepiece is tested by submerging them down to 1 meter of water for 30 minutes.
5 years transferrable Limited Warranty upon registration of the product.