Primary focus of Celestron EdgeHD 925, f/10, CGEM mount, NexGuide autoguider, stack of 19 images of 10 minutes, ISO 1600, Canon T1i, Image processing: PixInsight and iPhoto. Images captured on 2012-10-09 in Duchénier National Reserve near Saint Narcis de Rimouski, Quebec, Canada. Image processed using new technique for reducing noise with 200 bias and 50+ darks.