Here's a 2-panel mosaic that I just finished of the oft-imaged region in Scorpius and the Rho Ophiuchi complex. I started this in 2020 by shooting RGB with my modded Canon 600D, Rokinon 135mm f/2 lens, and Skyguider Pro. This was before I was guiding and dithering, and between the low altitude and walking noise, the data was absolute garbage. It was so bad that I put it out of my mind and almost forgot I had the data.
Fast forward 1 year, and it occurred to me that maybe I could salvage it by shooting luminance data through my mono Canon 60D and blurring the living snot out of the RGB data. I spent three nights shooting the Blue Horsehead with the 60D, same lens, and iExos-100 mount dithered every three subs. With as low in the sky as it was, I managed barely over three hours. It definitely shows the noise, but I think it was a vast improvement over the RGB garbage. The second panel with Rho Oph was halfway decent, so I split the RGB data into channels, re-integrated it with using the "max" for each pixel location, and substituted this as luminance data for the second panel.
I made a mosaic for the luminance data in Astro Pixel Processor, and then did the same with the RGB data. Split the RGB mosaic into channels, and then recombined as LRGB in APP. Then through Starnet++ and some final tweaks in GIMP.
Anyway, this is a total of 856 60-second light frames between the two cameras, ISO 800, Bortle-3 skies. Barely 20 degrees over the horizon, spanning several sessions from May/June 2020 and June 2021. Each session had a matching set of 30 each darks, flats, and flarks.
As always, C&C welcome and appreciated!
Full resolution on Astrobin: