This evening, just below the Wolf Moon, a fairly stationary cloud, unlike rapidly passing altocumulus, with a strange faint iridescence, barely visible to the naked eye but detectable photographically. In accordance with recent observations, it could be a type 1 PSC, a phenomenon that is certainly very rare for northern Italy.

Canon 50D + 28 mm. lens, tripod.

PS CC (saturation, contrast, lights and shadows)