30mm F4 Finder Scope Guide Scope with Double Helical Focuser Adjustable Focus 1.25in M42x0.75 Mount gray

Feature: 1. Sharp Image: 30MM large aperture ensures sufficient light intake, offering brighter imaging that allows you to see planets and stars in the pitch black night sky. It can prevent irritating reflections can bring you bright and clear images 2. Adjustable Focus: F4 aperture optics provides a very wide field of view which will help to quickly find the target when performing astronomical observations, using helical focuser, 9mm travel distance, allows for accurate focusing, providing clearer target images. 3. Comfortable Observation: Positive design brings more comfortable observation angle and improves the finder scope experience, not tired of using it for a long time. Fine workmanship bringing you visual enjoyment. 4. Sturdy Constr