A couple more images from the Photoline 72 and ASI174MM last night. No filters, as for the earlier image of the Iris. M51 is 30 minutes of 90s subs, stacked, stretched and cropped, but no darks. Looking at the full frame it’s quite clear darks are required, but actually I’m not unhappy with it. It’s also clear that this one needs a fair bit more focal length. The Triangulum is also 30 minutes, but 300s subs this time, and includes darks. Needs greater sub length I think.