The Vixen Optics Polarie Polar Scope is a dedicated Polar Axis Scope for Polarie that conveniently fits into the center hole of the Polarie Star Tracker for very precise polar alignment. This is a must for long exposure wide field astrophotography with the Polarie Star Tracker Mount. It features built-in 6x20mm scope. It is an astrophotography tool used to improve the polar alignment of the Polarie Star Tracker. Precise alignment of your Polarie Star Tracker with the Earths axis is essential to taking crisp images of the sun, moon, or celestial bodies. This Vixen Polar Scope will make your experience with the Polarie far easier and will reduce your set up time to just a few minutes. Features: Improves the polar alignment of the Polarie Star TrackerThe dials are used to adjust the time and date graduation circlesMedian offset to identify your longitudinal position on the Earth