This Explore Scientific 9mm 120° Series Argon-Purged Waterproof Eyepiece is a unique wonder, even in the world of hyper-wide eyepieces. The combination of relatively short focal length and exceptionally wide field of view will bring you up close and personal to the entire breadth of the main attraction be it a nebula, star cluster or galaxy.
Each Explore Scientific Argon-Purged Waterproof eyepiece is tested in one meter of water for 30 minutes, to guarantee a quality seal, and thus ensure fogless, moldless viewing for a lifetime. Internal pieces are EMD coated for further protection.
|Field Stop Diameter:||15.7mm|