Flexible rubber eyeguards reduce ambient light and glare reflections, thus protecting your dark adaptation, while providing the viewer with comfort for maximum visual effectiveness. Eyeguards assure proper eye-to-lens positioning and also protect the optical surface from grime and oil. The eyeguards are made of flexible, yet strong rubber so they will stretch a bit (3-5mm) beyond the nominal diameter noted below to fit over many other eyepieces.
Please note that these are sold individually.
Nominal diameter ~48mm (unstretched). Height = Xmm. These are from Agena's 2" Super Wide Angle eyepieces. As a reference, the diameter of the barrel extension this eyeguard sits over on the 2" SWA eyepiece is Xmm. Can be folded down. Made in China.