Regarding the Rosette Nebula, as others have well described, it is FAINT.
I only managed a total of 10 minutes on it last year (haven't tried since), and just for giggles, I decided to stretch the data as far as I could (as the nebulosity was barely discernable in the 10 min exposure at ISO 800).So, excuse the colours, bloating etc, as this was actually in my Reject file to be either deleted or used later...
It's grainy, colours maxed out (wrong colouring for the most part) etc. It's been stretched to death, but you can START to see the details.
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