i made tests on M57, trying lucky imaging.
Setup : SCT 9.25" F/D 10 + IMX178 color sensor camera
I used sharpcap and livestacking, combining 2 pictures :
- 534 exposures 3s each gain 400/510
- 1122 exposures 1.5s each gain 510/510
I think it is my most detailed M57.
I am quite pleased with the result.