Another Bortle Red Zone image with a relatively short exposure of 40 minutes in 1 minute subs. I have another batch of 1 minute subs taken at ISO 800 to add to this, but here is the preliminary image for the time being.
The additional 40×60 sec @ ISO 800 subs-images are added into the mix and the updated full frame image and a close-in crop are above. 🙂
Just for fun, I added the above image with 2 previous images of M51 taken with bigger scopes and the results are below: