Nice work. I also have an interest in astrophotography, although have not had the chance to do any recently.
Some time ago I wrote my own (PC based) astrophotography software to handle aligning and stacking images. The alignment routines were based on https://www.researchgate.net/publicatio ... Algorithms
, although these days I would see if OpenCV could do it for me. You need to be able to identify image rotation as well as translation.
Image stacking works to bring out faint stars because the signal strength increases linearly with the number of images, but the random noise increases with the square root of the number of images, so the signal-to-noise ratio also increases in proportion to the square root of the the number of images. It does means I rarely bothered going beyond about twenty 30s exposures, as to double the image quality I would need 80 images. However, if the objects within the images are not aligned to within 1 pixel, the stacking does not work to bring out the faint objects.
p.s. They are not meteorites unless they reach the ground. While still in the air they are meteors, and while still in space they are meteoroids.