- Low-dispersion lanthanum glass;using advanced computer design;combinations of low dispersion and high refractive index optical glasses;and durable multilayer deposition coatings;
- The 72 Series Argon-Purged waterproof extreme wide field eyepieces are optimized to produce high contrast;high resolution;and superior flat field characteristics;
- The 72 Series eyepieces come with a removable and foldable soft silicone rubber eyecup for the comfort of the observer;
- Fully multi-coated glasses for excellent image contrast and light transmission;
- Sharp optimal performance with low chromatic aberration;watch the scenery;bright celestial observations;nebula and so on.
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