Baader Polaris I Measuring + post

Baader POLARIS I - 25mm measuring and tracking eyepiece with T2 connection - illuminated The POLARIS measuring eyepiece with T2 connection has a universal T2 connection. It can be easily adapted for 1.25" or 2" focusers. The T2 thread makes it suitable for all lenses with a photo thread. The eyepiece can be illuminated (battery not included). Precise centring - e.g. when calibrating GoTo telescopes, measuring - thanks to the calibrated scale, precise measurements can be made, e.g. of star distances. Tracking - short focal lengths can be easily tracked with the eyepiece. A scale with standardized distances is etched onto a multi-coated plate. This allows the eyepiece to be used for various applications.