How to Photograph the Aurora: Camera Settings and Techniques That Actually Work

What you actually need

Aurora photography is night photography with a moving subject, and the equipment requirements follow from that. You need a camera that supports full manual control and can shoot RAW files - almost any modern mirrorless or DSLR camera qualifies, and increasingly, smartphones with a dedicated night or "pro" mode can produce usable results too. A wide-angle lens with a fast maximum aperture (f/1.4 to f/2.8) matters more than the camera body, because it is the lens that determines how much light reaches the sensor during a short exposure - and short exposures matter because the aurora moves.

A sturdy tripod is non-negotiable, since exposures will run from one to twenty seconds. A remote shutter release, or simply your camera's self-timer, avoids the small vibration of pressing the shutter button by hand. In cold conditions, spare batteries are essential - lithium batteries lose a large fraction of their charge in freezing temperatures, so keeping spares in an inside pocket and rotating them is standard practice for winter aurora photographers.

Getting the settings right

Start in fully manual mode. Set the aperture as wide as your lens allows. Set white balance to around 3,500-4,000K, or shoot RAW and correct it afterwards - auto white balance often makes the aurora look artificially cool or warm. For a moderately active aurora, a shutter speed of four to eight seconds at ISO 1600-3200 is a reasonable starting point; fast-moving, bright aurora needs a shorter exposure (one to three seconds) to avoid the display blurring into a featureless smear, while a faint, static glow benefits from a longer exposure (ten to twenty seconds) to gather more light.

The single most important technical step is focus, and it is also the one beginners get wrong most often. Autofocus generally fails in the dark. Switch to manual focus, use your camera's live view zoomed in digitally on a bright star or a distant light, and adjust the focus ring until that point of light is as small and sharp as possible - then leave it alone for the rest of the session. Infinity focus marks on lenses are a rough guide at best and are frequently slightly off.

Composition and location

A shot of aurora alone, with nothing else in frame, quickly becomes repetitive. The strongest aurora photographs include a foreground - a tree line, a coastline, a mountain silhouette, or reflective water - that gives the image scale and a sense of place. Framing with the horizon in the lower third of the image, in line with the standard rule of thirds, generally works well for a display that has not yet reached the zenith.

Location choice is mostly about avoiding light pollution and getting a clear view toward the pole - north in the northern hemisphere. Sites away from towns, ideally on the darker end of the Bortle scale, make a substantial difference to how much faint structure the camera can capture, since even modest artificial light easily overwhelms a long exposure.

Timing, and what to expect from the UK

Aurora can appear at any time after dark, but statistically the hours around local midnight, roughly 10pm to 2am, see the most activity, partly for reasons connected to Earth's rotation relative to the magnetotail. The equinox months of September and March also tend to be somewhat more active on average, a real but modest statistical effect known as the Russell-McPherron effect, on top of the much more important seasonal fact that autumn and winter simply offer longer, darker nights.

From the UK, aurora visible to the naked eye generally requires a moderately elevated geomagnetic storm - roughly Kp 6 or above puts a faint glow within reach of Scotland and northern England, while Kp 7-8 storms have produced displays visible as far south as southern England and even mainland Europe. Cameras, however, are considerably more sensitive to the aurora's characteristic wavelengths than the human eye, especially at lower Kp levels, so a long exposure from a dark site in Scotland, the Lake District or Northumberland will often reveal colour and structure in the sky that looked like faint grey haze, or nothing at all, to the naked eye.

Common mistakes worth avoiding

The most frequent failure is a soft, out-of-focus image caused by trusting autofocus or an approximate infinity mark - always verify focus on a star at full digital zoom before the display arrives. The second is exposing too long: beyond about twenty seconds, star trails start to appear and a fast-moving aurora blurs into a shapeless glow, so it is usually better to shoot shorter and raise ISO than to chase extra light with a longer shutter speed. Finally, stray white light - from a phone screen, a car, or an unshielded torch - can ruin a long exposure from metres away; a head torch with a dim red-light mode preserves both your night vision and everyone else's photographs.