Product Description The 9mm high power Omni eyepiece is a 4 -element premium symmetrical Plossl optical design and provides mid to high power on most telescopes. The Omni eyepiece body is made of aluminum. A two-step anodizing process results in a beautiful matte finish that resists reflections and glare. Each eyepiece in the Omni Series includes a black rubber eyecup. It can be left up or folded down for better observations while wearing eyeglasses
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