Supernova in the Deer Lick Galaxy

A couple of nights ago, I found a supernova in galaxy NGC 7331, also known as the "Deer Lick Galaxy." It was the final image I took on the night of August 8, 2025. But I didn't notice the supernova. I didn't see any new stars in the vicinity of the galaxy, and I proceeded to shut down my telescope and camera for the night. But as I downloaded the night's worth of images from my imaging laptop (that's attached to my telescope tripod with double-stick tape), I decided to adjust the contrast and brightness of my image of NGC 7331 and see if a supernova might be lurking in the bright nucleus of the galaxy. To my great surprise, there was, indeed, a supernova in hiding! In the old days, when we astrophotographers used emulsion films to take pictures of celestial objects, we routinely overexposed the cores of galaxies in order to reveal their fainter spiral arms. We considered the washout of the galactic core to be an acceptable loss in order to gain views of faint...