The 9 mm 100-Degree Eyepiece from Explore Scientific is a top notch, nitrogen purged, high-performance wide field eyepiece. Like all Explore Scientific eyepieces, the lens elements of the 100-degree eyepiece are meticulously cleaned and aligned before being installed in their precision machined lens barrels.
Each lens and lens grouping has EMD (Enhanced Multilayer Deposition) Coatings and is edge-blackened to eliminate light scatter and maintain image contrast. Contrast is further enhanced with baffles that mask and deflect unwanted stray light.
Each 100-degree 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-degree eyepiece is tested by submerging them down to 1 meter of water for 30 minutes. Each and every Explore Scientific eyepiece is inspected both at the factory and again at our USA facility in California.
OPT Product Number: ES-EPWP1009-01