An “impossible” combination?

This photo shows both Full Moon and our galaxy The Milky Way – a combination rather impossible in normal conditions. But no composition was made here. The trick is that this panorama was taken during Total Moon Eclipse (April 5, 2015). The moon doesn’t look pink because of the 30 seconds exposure for every tile in the mosaic, but it’s still very dim, so it does not outbright the Milky Way. It’s a 16 tiles mosaic united in a equidistant projection (same result could be obtained with circular fisheye lens). Another interesting phenomena can be observed here – both manmade and natural. There is aereal traffic, satellites traces and some metheors lining their cords through the “circular frame” of the image made up by the light of the villages and towns surrounding Bryce Canyon, Utah, USA. In the left semicircle it can be seen that a sunrise is approaching soon. Andromeda Galaxy can be spotted “at 10 o’clock”. Another thing to note is the green glow of the night sky which forms a concentric circle around the center of the image, along the horizon line where tha atmosphere is thickest. This effect is originated by atoms of oxygen in ionosphere, at about 90 to 100 kilometers high. One of the causes is the recombination of atoms photoionized during the day by the Sun, another is luminiscence caused by cosmic rays, and also quimioluminiscence caused by oxigen and hidrogen reactions with hidroxile free radicals.

Nikon D750, iso3200
Rokinon 14mm F2.8
16 tiles panorama, 30 seconds exposure each
Bryce Canyon, Utah, USA
April 5th, 2015

Autore: Pavel Vorobiev (sito)