I have plenty of experience with the multiple images joined into one image to give the effect of progressive movement where I've even gone a step further and done it with a panning image. At first that is what I was kind of considering image stacking to be but when I read on the Internet I learned that its best for photographing the sky at night.


Found this webpage (http://keithwiley.com/astroPhotography/imageStacking.shtml) and it helped me to understand better. Simple right?!?!