Using a tripod properly.

A long exposure demands stillness. The faintest tremor blurs the frame.

Shooting the northern lights usually calls for exposures of 8–30 seconds; through that time you have to hold the camera steady. A solid tripod is therefore part of the photograph, not just the kit.

Wind and ground.

In strong wind a tripod shakes. Spread the legs fully for a low profile; don't extend the thinnest end sections, stop at a thicker stage. Make sure the ground you set up on is solid — rock or frozen earth, not snow.

Don't touch the camera.

Even on a well-anchored camera, pressing the shutter with your finger spoils sharpness. Use a remote or a cable release. Turn the rear screen's brightness to its lowest or switch it off entirely — even a flash of light blinds your dark-adapted eye.