The nebula colors should be pretty close to correct. I found LEDs emitting at 502nm (Oiii is 500.7) and 657nm
(Ha is 656.3) to use as color references during processing. My monitor is calibrated and I converted the images
ICC profiles to sRGB for compatability with the common browsers.
I use Sequence Generator Pro for image capture. It makes collecting mosaic frames easy--automatically shifting
between the mosaic panels and doing plate solves to put the camera back on the exact pixel and rotation
night-after-night and location-after-location. I had 20 location changes during the year and a half of exposure
Though the exposure information shows 1632 sub-frames over 96 hours, I really captured 2296 sub-frames accounting
for 132 hours total exposure. I then chose the best 6 hours of luminance, Hα, and Oiii and the best 2 hours
of red, green, and blue for each panel to make build the image.
The image is rotated 120° clockwise to fit the object mosaic and because I think it looks pretty good that way.