Here’s one I’ve been struggling with trying to get the noise down since conditions were very poor when I shot the sub-images for this.  Compare mine to this one by Damian Peach shot less than 45 minutes later.  🙂

I have another image below that I initially posted.   For the above image, I reprocessed it from the original stacks.  But, I used a slightly different blending method (screen blending) for the comet and background star image to create the composite and lighten blending for the image below: