The full resolution is over 100 megapixels. You can view the full resolution image on my Astrobin here: https://www.astrobin.com/pk3ema/0/
The Veil supernova remnant is magnificently beautiful and I wanted to capture the entirety of it. This has been my most ambitious project yet, consisting of 9 panels, and over 100 hours of acquisition.
It was actually my first mosaic process, and I have to give special thanks to Dennis Sprinkle for providing me with his APP mosaic workflow. I also followed David Ault's mosaic tutorial - Highly recommend it!
My process workflow went as follows: Organize all the subframes into appropriate directories for channel and panel. PixInsight: Batch preprocess the subs for calibration; Eliminated any bad frames; StarAlignment; Integration; Cropping; ABE; export each master panel as TIFF. Astro Pixel Process: Import all the master panels; mosaic registration and integration. Did that whole process for each channel. Load mosaic images into PixInsight: Cropping; DBE; Deconvolution; Combination; Background and color calibrations; HistogramTransformation; Luminance and Saturation tweaks; light HDR applied. Then exported as TIFF and imported into LightRoom. LightRoom: adjusted color temperature; applied noise reduction; applied sharpening; adjusted background shadows.
Please let me know if you have any question, comments, or feedback! I'd love to share more about any part of my workflow and process with anyone curious.