The biggest difference is always going to be in the darker areas. I understand that my test from way back isn't exactly comparable in many respects but.
1200s
2400s
3600s
There are all three just single subs but even if I combine the 1200s and 2400s they don't even come close to the 3600s in contrast and signal. These were taken with my QHY9 from Melbourne on a full moon imaging towards the heaviest part of Melbournes sky glow with 3nm filters
