Very high optical quality finderscope with a wide 6.2° field of view. The usable eye relief is 12mm. This is is more than acceptable for most observers, but will somewhat vignette the field for those who must wear eyeglasses while observing. The eyepiece screws in and out of the body to focus. The finder has an etched reticle with extremely thin crosshairs that do not obscure alignment stars. . . .