Home Masuyama 2" Eyepiece 60mm Masuyama 2" eyepiece 50mm Masuyama 2" Eyepiece 45mm Masuyama 2" Eyepiece 32mm Masuyama 2" Eyepiece 26mm Masuyama 1.25" Eyepiece 16mm Masuyama 1.25" Eyepiece 10mm [MOP-45] Masuyama 2" Eyepiece 45mm Focal length 45mm Apparent field of view 53 degree Eye relief 32mm Lens configuration 5 elements in 3 groups Coating Fully multi-coated Physical length 128mm Outer diameter 65mm with rubber grip 60mm without it Weight 508g