This high-precision 1.25" eyepiece for the advanced amateur has a laser-etched reticle that is evenly illuminated by an internal red LED, with variable brightness intensity from bright to faint. Includes four types of measuring scales for measuring double star angular separations, position angles, planetary diameters and lunar crater diameters. Also has a double-crossline scale for long-exposure photo guiding, making it a truly all-purpose illuminated reticle system.

3-element Modified Achromatic optics are coated for increased light transmission, and eyepiece's diopter adjusts for sharp focusing of the reticle to the observer's eye. Comes complete with wireless illumination control and internal batteries.