Distance: 7,000 ly

Telescope configuration: Celestron EdgeHD 1400 with the Celestron 0.7x focal reducer (fl=2737mm, f/7.7).
Camera: Canon EOS 6D unbinned, IR modified. Best 7 out of 8 - 10 minute exposures at ISO 0800. Temp approx. 56F.
Image scale: 0.49 arc-sec/pixel (resampled to 0.99 arc-sec/pixel). Image capture using ImagesPlus 5.75 Camera Control.
Mount: Software Bisque Paramount MX with PEC and ProTrack enabled. Autoguided with an SBIG Sti autoguider, a Celestron OAG (off-axis guider) and a Starlight Xpress AOLF (Adaptive Optics Large Format) device using PHD2 autoguiding software, not dithered.
Post processing: ImagesPlus 6.0: Calibration, alignment, stacking using 7 dark frames, 7 bias frames and 7 flat frames, Median Sigma reject combined to eliminate satellite/meteor trails, DDP, no color adjustments. Curves in Nebulosity3. Adaptive Richardson-Lucey deconvolution (7x7 by 7 passes) in IP. Resized to 50pct, cropped to 1800x1600 and contrast enhancement in ThumbsPlus7. Multi-Resolution Sharpening (wavelets), in IP.

20150424_M16_CombSigMed-IPddp-NEBcrv-IParl-TPadj-IPmrs.tif