Astromania Artificial Star Dimmable for Telescope Tests and Collimation - Provides Perfect Adjustment of Your Telescope and Offers Also a Quick Testing Possibility

This artificia star provides perfect adjustment of your telescope and offers also a quick testing possibility, Brightness is continously dimmable; thus the contrast can be set optimally, Helpful photo tripod connector with female 1/4" thread for versatile fastening and mobile use; 1/4" brass extension; thus attaching to the photo tripod always succeeds, Precise pinhole with 22 µm diameter for exact results yet sufficient light, Metal housing "no Plastic"; powered by two common 1.5 V AA batteries "batteries are not included - user supplied