Designed for the new Advanced Polaris Mount, this is a completely new type of alignment scope. Precise alignment can be achieved by using Polaris and 2 known stars in the proper location on the reticle in the northern hemisphere. Use the trapezoid in Octans in the Southern hemisphere. Built in dark field illuminator with red LED light illuminates the scales. Angle settings and hours are no longer needed to orient your mount precisely for long hours of observing.