Double Cluster in Perseus 

From my post on r/astrophotography

The Double Cluster is the common name for the open clusters NGC 869 and NGC 884, which are close together in the constellation Perseus. Both visible with the naked eye, NGC 869 and NGC 884 lie at a distance of 7500 light years.

Equipment:

Nikon D3200 (Unmodified)
Skywatcher HEQ5 Pro Mount
Skywatcher 130P-DS
ZWO ASI 120MC with 50mm Guidescope
Acquisition:

48x90s Light Frames20x90s Dark Frames
25 Flats
25 Bias
Software:

EQASCOM
PHD 2 Guiding
SharpCap Pro Polar Alignment
Cartes Du Ciel

Processing:

Photoshop CC 2015
Deep Sky StackerPixInsight
Astronomy tools actions set*
Gradient Xterminator

Processing Workflow:
DynamicCrop
AutomaticBackgroundExtraction
BackgroundNeutralisation
Make it non linear with HistogramTransformation
RangeSelection
Invert mask and make background darker with Curves
Extract Luminance layer
LRGBCombination to bring out colour
SCNR for colour noise
Starmask for smaller stars
MorphologicalTransformation to make smaller stars even smaller

Photoshop for final curves and levels adjustment for colour correction
Lightroom to bring down colour noise