Distance 53.5 ± 1.63 Mly in Virgo

Telescope configuration: Celestron EdgeHD 1100 with the Celestron 0.7x focal reducer (fl=1960mm, f/7.0).
Camera: SBIG STF8300M. Exposures: 7 @ 10 min., CCD temp -10c. Seeing: 3.90 arc-seconds FWHM.
Image capture scale: 0.56 arc-sec/pixel (un-binned). Field of view (horizontal) = 31.7 arc-min. Image capture using Software Bisque TSX Pro Camera Add On.
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, not dithered.
Post processing: ImagesPlus 6.5: FITS conversion and calibration, alignment, stacking/combining using 0 dark frames, 7 bias frames and 5 flat frames, Sigma Clipped Median Combined factor 2.55. Stretched, DDP, Curves and Adaptive Median Noise reduction in Nebulosity4. 2 pass unsharp mask in ThumbsPlus10.

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