Celestron 8", C-GEM Mount, Canon 60DA, Guided By Orion 80mm with Celestron Nexguide. Exposures: 20 x 15 sec, 20 x 1 Min, 20 x 5 min. Appropriate darks and Bias for each time frame. Stacked in DSS, layered and posted in Photoshop CS 3. Converted to HDR By freeware Luminance HDR