Explore Scientific has used advanced computer computer design and high quality glass with EMD coatings to create excellent flat field, multi-element oculars.
Each of the Explore Scientific 62° Series Argon-Purged Waterproof eyepieces is tested in one meter of water for 30 minutes, to guarantee a quality seal, and thus ensure fogless, moldless viewing for a lifetime. All components, including internal pieces are purged in argon for further protection.
This eyepiece is par-focal, meaning that it stays in focus regardless of the focal length chosen. Also, the piece has a removable and foldable soft silicone rubber eyecup for the comfort of the viewer.
|Description||20mm 62° Series Argon-Purged Waterproof Eyepiece|
|Field Stop Diameter:||20.9mm|