NGC 6946: The Fireworks Galaxy Space Recent Nebulae Galaxies Star Clusters Solar System Other Facilities Nature People Programs SkyNights DiscoveryDays SkyCamp (Click the image above for the largest available version.) NGC 6946: The Fireworks Galaxy Picture Details: Optics             24-inch RC Optical Systems Telescope Camera           SBIG STL11000 CCD Camera Filters              Custom Scientific Dates               June 21st and 23rd 2009 Location          Mount Lemmon SkyCenter Exposure          LRGB = 140:60:60:60 minutes Acquisition       ACP Observatory Control Software (DC-3 Dreams),TheSky (Software Bisque), Maxim DL/CCD (Cyanogen) Processing        CCDStack (CCDWare), Mira (MiraMetrics), Maxim DL (Cyanogen), Photoshop CS3 (Adobe) Guest Astronomers:                   Bill Stoffers and John Fitzgerald Credit Line and Copyright        Adam Block/Mount Lemmon SkyCenter/University of Arizona