I'm on vacation so I've spent a day writing automatic alignment of images (that rotate, scale and move) so that images can be stacked in "real time".
This means you can use your camera like a video camera, each frame taken (say 5 second exposures) is aligned and stacked automatically in realtime.
The code isn't finished, but currently will automatically detect, align and stack 17MB 383L frames in 8 seconds with lots of diagnostic images being generated during that time too. I should be able to get this down to 1-2 seconds which, when coupled with a 5 second exposure will result in a near realtime "live view"
Below is a scaled down example rotation of the frame - the software detects the misalignment and corrects automatically .. in the next post is the correct image.