NGC 918 Picture Details: Optics 32-inch Schulman RC Optical Systems Telescope Camera SBIG STx16803 CCD Camera Filters AstroDon Generation II Dates November 2015 Location Mount Lemmon SkyCenter Exposure RGB = 5 : 5 : 5 Hours Acquisition Maxim DL/CCD (Cyanogen), AStronomer Control Panel (DC3- Dreams) Processing CCDStack (CCDWare), Photoshop CC, PixInsight Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona .