Thanks for the heads up on Starstax Mike. I just ran a side by side comparison between it and Startrails.de. I found no difference between the quality of the stacked images. One plus with Startrails is you can spit out a movie whereas you cant in Starstax. I really like the save between each step option in Starstax. I found the processing a fraction faster in Starstax so I might be using it a bit more. Thanks again