Autostakkert is an application that aligns and stacks solar, lunar and planetary images. This normally involves a very large number of individual subframes captured in the form of a video stream, in an imaging technique known as lucky imaging. Solar system objects are very bright, and require very short exposure times. During capture, the Earth's atmosphere normally causes distortion in the frames due to turbulence and thermal currents. By capturing a large number of subframes and stacking them, these distortion effects can be reduced or possibly even eliminated.

What Autostakkert does not do is any form of sharpening or deconvolution. The stacked image file that it creates needs to be further processed in another application to achieve a final result. For me, this would be Registax although other methods do exist.

To learn more, you can visit the Autostakkert website.