I shot this also on Saturday night. I've never been able to see it very good in the past but that night was REALLY clear and I had a good focus. Again, tracking was drifting a little so I made short shots (60 sec) with a high ISO setting (6400). I shot the darks the next day to add to it. I remembered reading something about the Fireworks Galaxy lately but I couldn't remember exactly what it was so I Googled it. Sure enough, there was an article about Patrick Wiggins discovering a supernova in the galaxy. You can read the article and see the pics of it at https://phys.org/new...rks-galaxy.html.
Here is my image of the Fireworks Galaxy and another one with the supernova labeled, if I got the right star. You guys check and see if it is. If it is, according to the article, its light should fade over the next few months. I should be able to image it from my backyard until late November, at which time it will go behind a treeline and won't be viewable at a decent hour until June of next year.
Man I love astronomy!!