20mm Orion Ultrascopic Telescope Eyepiece
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20mm Orion Ultrascopic Telescope Eyepiece Overview
The Ultrascopic eyepiece series offers unsurpassed image fidelity. Rather than having a single layer of magnesium fluoride on most lens elements, Ultrascopics are Ultra Multi-Coated, meaning that every air-to-glass lens surface is vacuum coated with multiple anti-reflective layers. There is no higher level of multi-coating. These coatings, coupled with a low-reflection barrel with blackened lens edges, improves both brightness and contrast of faint nebulas and galaxies. These premium 1.25" eyepieces employ 5- or 7-elements using high-refractive-index glass. Each produces a wide 52-deg apparent field of view . Internally threaded for filters.
20mm Orion Ultrascopic Telescope Eyepiece Feature
- This premium 20mm telescope eyepiece is parfocal so you need only minimal refocusing when switching powers
- Great eyepiece for moderate power scanning of the heavens
- Fully multi-coated eyepiece optics ensure maximum light transmission
- Superior coating dramatically improves both brightness and contrast, increasing visibility
- Includes a detachable winged rubber eyeguard to block out stray light and help position your eye
