Played with Deep sky stacker on the M42 images I did last week. I like the result. Ive cropped it from the previous version. (I cant get much more nebulosity than what I have so its just a waste of space)
This is 13 image stack, and used photoshop for the final edit. (which was tricky, given how bad the image looks coming from DSS)
My next goal is to use auto-guiding