Premium Flat Field Eyepiece 3.5mm/5.5mm/7.5mm/10.5mm/15.5mm/19mm/25mm

PF3.5mm/5.5mm/7.5mm/10.5mm/15.5mm/19mm/25mm SKY ROVER PF series eyepieces are flat-field eyepieces, which can not only effectively improve the distortion around the field of vision, make the observed picture more real and comfortable, but also provide sharp imaging, ensure the observation quality, and be more approachable in terms of price.PF eyepieces can be used for viewing, bird watching, stargazing and other occasions that require flat-field performance.PF series eyepieces contain five focal lengths of 3.5mm, 5.5mm, 7.5mm, 10.5mm, 15.5mm, 19mm and 25mm, so that you can have more choices. Specifications Model: SKY ROVER PF 3.5mm eyepieceFocal Length: 3.5mmEye Relief: 15mmField Stop: 3.9mmOptical Structure: 6 elements in 4 groupsCoating: Fully multi-coated (FMC)Net Weight: 115gSize: 35x84mm (width x height)Interface Size: 1.25-inch interfaces, with standard 1.25-inch filter threadEye Cup: Folding Model: SKY ROVER PF 5.5mm eyepieceFocal Length: 5.5mmEye Relief: 16mmExit diap