A field of nimbostratus, fronting an oncoming cluster of thunderstorms, spread over the Kitt Peak telescope array, as seen from the desert floor about 4,000 feet below. This created the sort of nice dark-sky/sunlit-land contrast I’ve long enjoyed watching and shooting. These are just a few among over 20 optical and two radio telescopes at the Kitt Peak National Observatory, including the world’s largest solar telescope. I am confident that the latter instrument was not in use at this moment.
14 ENE Sells AZ (2 Jul 21) Looking E
32.0158, -111.6358