The reticle eyepiece is a practical aid for the precise alignment of telescopes and for astrophotography. The illuminated reticle makes it easier to centre stars accurately and enables reliable monitoring of the tracking. This makes the eyepiece particularly suitable for use with a guide scope or an off-axis-guider unit.
The adjustable lighting allows the brightness of the reticle to be adapted to the prevailing observing conditions. This ensures that the reticle remains clearly visible even with faint guide stars, without unnecessarily outshining the object being observed.