72° ED Series 40mm Waterproof Eyepiece

The Explore Scientific 72° ED Series 40mm Waterproof Eyepiece is a deliberate choice for the widest practical view of large sky objects. Its 72° apparent field gives your eye useful context around the target, while extra-low-dispersion glass helps preserve contrast and control color fringing.Choose the 40mm focal length with purposeThis is not a generic upgrade. The 40mm focal length is tuned for the widest practical view of large sky objects, giving you a clear reason to reach for it when conditions and targets call for that view.Optical details that earn their place 40mm focal length for the widest practical view of large sky objects 72° apparent field of view Extra-low-dispersion glass for sharpness, contrast, and more accurate color 2-inch barrel with waterproof construction Long eye relief for measured, comfortable viewing Add the 40mm when you want a defined role in your eyepiece case—not another redundant focal length. SKU: EPWP7240ED-01.