Manufactured in Japan exclusively for University Optics. The 32 mm Konig was the original high performance wide-field eyepiece over 25 years ago and while many have tried to copy its performance characteristics, they have all fallen short. The 40 mm Konig was designed as the compaion to the 32 mm list above. This new eyepiece is fully multi-coated with a large 60 degree field of view. It's blackened lens edges along with other design characteristics, provide the highest contrast available in an eyepiece of this focal length.
Multicoated optics are standard.
The perfectly balanced eye relief is very forgiving in that your eye does not have to be perfectly on axis to get the full effect of the wide view. New low dispersion camera quality glass lends itself to this advanced optical design. For medium to large aperture instruments, the Konig 40 nun MK-70 is wide field perfection. He dug into his eyepiece collection and came up with one of his favorite resolution testers, the Orthoscopic. Yes, if you're interested in the sharpest view of a planet or lunar mountain range, then you need the University Abbe Orthoscopic.