Meade 497 Autostar Computer Controller for ETX Telescopes 30,344 celestial oobject database Finds and Tracks all celestial objects, including the moon, planets, asteroids, comets, and satellites Celestial event option for eclipses, meteor showers, moon phases, and equinoxes Built-in eyepiece calculator and options for advanced telescope control Works with ETX-90EC, ETX-105EC, ETX-125EC Astro telescopes