6 - 600 second exposures with the SBIG ST-8300M (monochrome) CCD camera at -20C. No filter. Telescope configuration: EdgeHD 9.25 (2350mm, f/10) and no focal reducer, unbinned, yielding an image scale of 0.47 arc-seconds/pixel. Mount: Losmandy G11 w/Gemini. Focused using a Bahtinov focus mask. Post processing: dark frame subtraction, alignment, min/max excluded average combining in ImagesPlus 4.0 using 13 dark frames, no bias frames and no flat frames; DDP and curves in Nebulosity2. Adaptive Richardson-Lucy Deconvolution in ImagesPlus (9x9 15 passes). Cropped and gamma boosted in ThumbsPlus. Autoguided with a Lodestar autoguider connected to a Stellarvue 50mm finderscope and a Celestron 2x Barlow and PHD autoguiding software.
FOV 11.1 arc-mins.