This has been my most ambitious project to date!  

Once the spring weather started clearing up, I was checking to see what targets to shoot with my widefield setup and set my eyes on the Cygnus region. 

I have seen widefield mosaics/images online and after checking in Sequence Generator Pro's Mosaic wizard, I initially realized I needed 18 panels to get this done and decided to go for it. I have been posting individual panels on Astrobin along the way as I knew when I got them all together, I can't get results that I get when processed individually.  

I have zero experience in mosaics, but knew I would get the help I need as I navigate through the mosaic process. I thought data collection was the easiest part, I was so wrong. Between the clouds, varying intensities of the moon and partial cloudy nights, I had to reshoot at least a channel on each panel all over again. Early on, I was also losing the focuser drawtube inward travel in just a couple of hours of the imaging session. Turns out, the backfocus needs to be exactly at the manufacturer specs. Spent a few nights on troubleshooting this and poring through CN forums. 

Then came the fun part of stitching all of it together in PixInsight. The panels did not play along well, horrible seams, one panel brighter than the other and I was wondering if I had to stop. I even tested this in APP and did not quite get the result I was hoping for. I believe it was user error as either in PixInsight or APP it did not blend well.  

After getting help from Dennis recently, I am now convinced for mosaics APP is the way to go, at least for this dataset. It just worked! I had to go back and shoot six new panels as on the integrated stack, the hook portion of veil was getting cut off in the bottom and the filaments near North America nebula were getting cutoff at the top.   

I kept the processing as minimal as possible as even SCNR was taking several seconds to work with.  

On each channel's MasterLights:
Calibrate using WBPP v2.1
Drizzle Integration x 1 
Mure Denoise at 0.3

For the mosaic:
Crop on the extreme edges
4 - point DBE (courtesy of Anis)
Integrate in APP with mosaic options

Final Image:
SHO blend
Histogram Transformation
SCNR
Curves using masks
Noise reduction using TGVDenoise
Sharpen using MLT 
Resize to 8K x 5K jpeg file

24 panels is what the final image took to finish. 

I will have to take down this rig soon and put it back on the EQ6-R that I got back from Sky-Watcher (RA axis was troublesome) so I can get the long focal length setup going on the AP mount that has been sitting idle for the past three months.  

For now, I will stick to single panel images and will plan to attempt mosaics later in the fall, maybe!  

I realize the description is wordy but hope you enjoy this image at the full resolution. Clear skies!