Celestron Fastar 8 at f/1.95, PixCel 237. This 40 minute exposure consists of a 600 second (five by 120 seconds Track and Accumulate) luminance file (which I forgot to shoot, so I used the R file here), and three 600 second (also five by 120 seconds Track and Accumulate) RGB files. I had originally scrapped this series because of a major flare problem. But, it'll do for now. Unguided at -12.39 degrees Celsius. Post processed with CCDOPS v4.00, and combined in Adobe Photoshop.