Explore Scientific 5.5mm 100 degree Series Argon-Purged Waterproof Eyepiece

Explore Scientific 5.5mm 100 degree Series Argon-Purged Waterproof Eyepiece. 5mm 100-Degree Series Argon-Purged Waterproof Eyepiece. The Explore Scientific 5.5mm 100 Series Hyper-Wide Argon-Purged Eyepiece features a field of view that is close to the maximum for hyper-wide with not just directly at an object but slightly to either side as well. With the Explore Scientific 5.5mm 100 Series Ultra-Wide Argon-Purged Eyepiece you'll forget that you even have an eyepiece between you and the universe. Specifications for Explore Scientific 5.5mm 100 Series Ultra-Wide Argon-Purged Waterproof Eyepiece: Focal Length: 5.5mm Length: 150mm Width: 56mm Barrel Size: 2.00" Eye Relief: 10.5mm Field Stop Diameter: 9.6mm Package Contents: Explore Scientific 5.5mm 100 Degree Series Argon-Purged Waterproof Eyepiece 100 Series 5.5mm Argon-Purged Waterproof Eyepiece; 2.0-inch O.D.