Celestron Eyepiece Omni 56mm 2"

Ultra-long 56mm focal length provides low power views in telescopes with a long focal length, perfect for viewing wide-field deep sky objects or daytime terrestrial vistas 4-element Plössl design provides sharp views to the edge of the 47° apparent field of view Fully multi-coated for best light transmission through the lenses, resulting in brighter images Comfortable eye relief (52mm) and fold-down rubber eyeguard for comfortable viewing with or without eyeglasses Knurled rubber grip ring for non-slip handling during observing sessions Threaded to accept most 2” filters Barrel Size (DIA): 50.8mm (2") Focal Length: 56mm (2.20") Apparent Field of View: 47° Optical Design: Plössl Number of Lens Elements: 4 Number of Lens Groups: 2 Optical Coatings: Fully multi-coated Eye Relief: 52mm (2.1") Parfocal Eyepieces: No Filter Threads: 50.8mm (2.0") Eye Guard: Yes, rubber, fold-down Weight: 15 oz (0.4 kg) Dimensions: 119mm (4.7") tall x 64mm (2.5") diameter