5/29/2022 Los Angeles, CA (Bortle Class 9) Nikon Z6 William Optics GT71 71mm f/5.9 Triplet Refractor Optolong L-Pro 2″ Deep Sky Filter Sky-Watcher Sky Adventurer Mount 92 lights; ISO 400; 60-second exposures, stacked 72 flats; 50 darks; 80 biases The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on spiral… Continue reading M101 Pinwheel Galaxy