This is where I am at so far with NGC4565. This is 16x1800s so far of luminance data. It's not coming up too badly for sure, but I do want a lot more luminance data to really get those dust lanes popping.
I've just checked out my last galaxy image and there was 54x1800s of luminance in M101. I'm not sure I'll get that far, but I will get more than I have here.
Keep an eye out and see how this develops.
Sara Wager is an astrophotographer with published articles and images to her name