Profile: Astrosystems, Inc. deals with astro systems. Our product line includes short Focal Length TeleKits f/3-f/3, 1.25" & 2" and auto collimator. Our brands include Telekit™, Rigel™, Thousand Oaks™, Telrad™, Astrobeam™. 1.25" & 2" lightpipe/zightube, Nebula filters and truss fasteners. Our each kit contains a 3/8" or 1/2" x 2.5" brass bolt, bronze thrust bushing, stainless steel locknut assembly and full instructions. The new bushing only requires a 1/2" through hole for the 3/8" bolt and 5/8" through hole for the 1/2" bolt. The supplied bolt length is configured for a nominal rocker box bottom thickness of 3/4" a ground board thickness of 3/4" and a teflon bearing thickness of 3/16". The 1/2" bolt kit is recommended for 20" and larger telescopes. Our ServoCAT GOTO Drive stellar cat system is a complete electronic control package allowing the control of a telescope using either a sky commander or Argo Navis digital Setting Circles as the reference. They can be used to control either a Dobsonian or an equatorial mount telescope. It has the ability to track or automatically follow the sky, slew (move) around at various speeds selectable by the user, and go to an object selected by the user.