iOptron Precision Adjustable AZ/EQ Base Precision adjustable equatorial base for SkyHunterTM, GOTO mount, SkyGuider Pro and SkyTracker Pro mounts. The base has a built-in bubble level. It accepts Vixen-type dovetail bar. The altitude adjustment range is from 0º ~ 90º. Features CNC machined, all metal construction Accept Vixen-type dovetail bar (not included) 0º ~ 90º in latitude adjustment ±5° in azimuth adjustment Φ80 mm mounting base Attaches to a camera tripod with 3/8” or 1/4” threads (optional 3/8"-1/4" thread converter needed) Technical Specifications Dovetail saddle Vixen-type Mounting base diameter Φ80 mm Mounting base socket 3/8” threaded socket Latitude adjustment range 0º ~ 90º Azimuth adjustment range ±5º Level indicator Level bubble Warranty One year limited In the Box iOptron Precision Adjustable AZ/EQ Base Warranty & Manuals iOptron 2-Year Warranty