AutoStakkert! (AS!3, AS!2) is lucky imaging software used to automatically analyze, align, and stack images of the Sun, Moon and Planets that were taken through a telescope. Using a fast video camera, noisy and slightly distorted images are obtained, that can be combined into a single high quality image using this software. AutoStakkert! is free software, easy to use, very fast, and generally produces the sharpest results compared to other lucky imaging software.