I held back quite a bit on the repro. Kept things simple. Better result IMO.
This was taken over 2 new moon periods (May and June 2015). I had about 8 hours data, but the seeing was a bit up and down so I tossed out an hour and a half or so.
It's a nice object, but very small--about twice the angular size of Jupiter.
Telescope: 12.5" Plane Wave CDK
Camera: FLI Proline 16803 (Real waste of real estate to get to this heavily cropped pic)
Mount AP900
Exposures: 10 x 10min each of L, R, G and B
FOV: 15' x 11'
Processing: PixInsight
New version here
http://www.astrobin.com/189227/B/
Geoff