Handheld Nikon CoolPix P900 camera at manual mode
Photoscape was used to improve contrast with reduced noise.
The photo shows the setting sun, severely flattened by stratified layers of air at different densities caused by the uneven mixing of a new cold front with a much warmer lingering mass. As the Sun descended, it was more and more distorted by differential refraction and acquired many different shapes, including: mushroom, pancake, disk and finally a very thin rectangle. It was indeed a delightful treat to end the day.