The photo was taken with a Sony A7 full frame camera at exposure parameters: ISO-2000; f / 4, 15 seconds, focal length of 21 mm, but when framing a photo it finally came out around 30-35 mm on a full frame. The full moon at the back slightly to my right was very illuminating the frame, so I finally had to extinguish the photo in a later work with Lightroom CC.
The formation of the aurora borealis is closely related to solar activity and so- During solar flares, as it did last Wednesday, the sun emits a huge amount of elemental particles, which collide with the upper atmosphere, and the energy released is seen on the planet. The aurora is found in several colors: green, red, yellow or white, each of which can be a wonderful spectacle in the sky, which is sure to be captured in the pictures.
Shooting the aurora is like shooting stars. You should go to a dark, distant place and aim the camera toward the northern horizon. The best time to set exposure is 500 (500 / focal length = time), maximum aperture opening and set the highest ISO sensitivity with which we can work comfortably with our camera. If the location is heavily contaminated by light, reduce the ISO sensitivity to avoid overexposing the image. The aurora moves very fast, so if we have very bright lenses, we can also reduce the exposure time to capture its delicate structure.