NGC6946, Firecracker Galaxy. 7/1/2011. CPC0800 F/6.3 focal reducer. Mitty Wedge. SXVR-M25C. IDAS LPS Filter. Hutech OAG. Lodestar. 30 x 10 minutes. Total 300 minutes. Pre-Processed (BPM, Bias, Flats Calibration and Debayer) with Nebulosity. Stacked and Post-processed with PixInsight. PHD settings: RA Aggressiveness: 90, RA Hysteresis: 10, RA Max Duration: 600, Dec Max Duration: 600, Min Motion: 0.60, Calibration Steps: 500msec, Auto/Resist Switching, Dithering: Extreme and Settle < 0.5, 0.2 sec guiding exposure.