NGC6946, Firecracker Galaxy. 7/2/2011. CPC0800 F/10. Mitty Wedge. SXVR-M25C. IDAS LPS Filter. Hutech OAG. Lodestar. 29 x 10 minutes. Total 290 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: 700, Min Motion: 1.00, Calibration Steps: 500msec, Auto/Resist Switching, Dithering: Extreme and Settle < 0.5, 1.0 sec guiding exposure.