The Pinwheel Galaxy (M101) photographed on Pi Day This grand spiral galaxy in Ursa Major is 21 million light years away. March 14, 2021 Gainesville, FL Full-Spectrum Modified Sony a6100 350mm Sony F6.3 Stacked 40 x 90 sec, ISO 800 SkyWatcher Star Tracker STC Optics Astro Mutli-Spectra filter
