Distance ~333 mly, in the constellation of Coma Berenices. Magnitude (various) North is up, east to the left.

Telescope configuration: Celestron EdgeHD 1100 with the Celestron 0.7x focal reducer (fl=1960mm, f/7.0).
Camera: Canon EOS 7D MkII un-binned, non-IR modified. Best 7 of 8 - 10 minute exposures at ISO 800. Ambient Temp +12C.
In camera High-ISO Noise Reduction set to high. Long Exposure NR Off.
Image capture scale: 0.43 arc-sec/pixel. Image capture using ImagesPlus 6.0 Camera Control, with manual dithering.
Mount: Orion HDX110 German equatorial mount. Autoguided with an SBIG Sti autoguider, a Celestron OAG (off-axis guider) and a Starlight Xpress SXV-AOLF (Adaptive Optics Large Format) device using PHD2 autoguiding software, dithered.
Post processing: ImagesPlus 6.5: Calibration, alignment, stacking using 0 dark frames, 9 bias frames and 0 flat frames, Min/Max Excluded Average combined. DDP stretch, no color adjustments, microcurves, no noise reduction, no sharpening. Slight gamma boost, contrast enhancement, resized to 50pct in ThumbsPlus 10.

20160216_Coma-Cluster_CombExcAvg-IPstretch-TPadj.jpg