The Celestron Omni 4mm Eyepiece has a 50º apparent field of view and is ideal for viewing the Moon, planets, and a plethora of deep-sky objects. It has four optical elements that has multiple layers of high-transmission coatings for clear, sharp images. The edges are blackened for increased contrast and to reduce reflections within the eyepiece. This eyepeice is made from aluminum, that undergoes a two-step anodizing process which creates a matte finish that resists reflections and glare. It has a rubber eye cup that is comfortable to use with eyeglasses. The insert barrel is threaded to accept 1.25” filters.
Focal Length | 4.0mm |
Eye Relief | 6.0mm |
Apparent Field of View | 52° |
Dimensions | 1.3 x 2.1" (34 x 53mm) WxH |
Weight | 0.15 lb (70 g) |