Iridiscent Contrails, A jet spewing colors in the Sky!

The weather was very clear today with a few high clouds over zenith making it perfectlynplaced for the creation of solar halo at 22 degrees and to add drama to this beauty the jets were spewing rainbow colors in the sky once again today and with so much clarity. I was lucky enough to capture a stunning solar halo with rainbow colors, accompanied by iridiscent contrails in the same frame!

Aircraft contrails have two sources. The major one is water droplets condensed from water vapour generated in the engines. Combustion of aviation fuel gives water vapour, carbon dioxide and traces of NOx and soot. The second generator is water vapour already in the air condensed to droplets by airflow over the fuselage and wings. Air passing over the top of wings or convex fuselage sections travels faster, expands and cools. Sometimes, if the air is sufficiently humid, water vapour then condenses out into a fine droplet mist. The iridescent colours are produced by individual water droplets diffracting sunlight. When the droplets are locally of similar size they all diffract their coloured light into the same direction and so colours become evident to us. (Via @soumyadeepmukherjeephotos and Les Cowley, Atmospheric Optics).

This image shows iridiscent contrails being thrown out by Eva Air Boeing 777 cruising at 30k feet above Allama Iqbal International airport, Lahore, Pakistan.
08-06-2024

Canon EOS 1300D
Samyang 135mm f2 lens

Single image ISO 100, f 5.6, 1/1600, 235mm cropped 60%