![](https://blog.cajunastro.com/wp-content/uploads/2020/02/m101-206x30-g37-o15-116x60-g20-o15-qhy183c_-20C-uhcs-85f5_6-v2-640x423.jpg)
Two sets of data taken back to back. First set was with 30 sec, high-gain sub-images and the 2nd set was with 60 sec subs at medium gain. Total time was 3.65 hours. Cropped about 50% out to isolate the galaxy. The 60 sec subs were better, but only because I had centered the target better and it was higher in the sky when I started the set.