I actually have not done any compositing/blending of moon exposures that I can think of. I’m not so much of a ‘landscape’ photographer, so I’m more interested in getting as much detail as I can from the moon, which means I’m always at the highest focal length I can get a hold of, which right now is 320mm on a 1.5x crop sensor camera. I could tell you how to do it, but I don’t own Photoshop, so it wouldn’t be the same as doing it in GIMP. The basic principles are the same, but the actual method would be slightly different.
I also find astro-photography interesting! You might be interested in my post about shooting the stars in Africa. I still haven’t gotten a chance to try for the stars with my new Pentax, all of my previous attempts have been with lower end cameras: Canon Rebel T3 and originally the Canon Powershot S3.
Attached are some of the very first long exposures I ever took, taken with our old Canon Powershot S3 with CHDK. I was so excited at the time, but when I look at them now… 🙂
