Photographing Northern Lights – Aurora Borealis
by Tony on Aug.10, 2009, under Photography Techniques
Photographing Northern Lights - Aurora Borealis
Northern lights are great to watch. It involves the burning of atmospheric gases high above the earth as a result of solar winds from the sun. You stand on this planet and realise how small and insignificant we really are, how short our lives are and how beautiful this planet is. In essence it is Night Photography. Photographing them takes a bit of knowledge, but once you have it, it becomes as easy as taking any regular photograph.

Aurora over Jökulsárlón
Equipment
This article discusses the use of digital SLRs (DSRLs), but a film camera is equally good and in some respects better. Whatever your camera, you need the ability to open the shutter for at least 30 seconds. If you have a bulb setting (B) and you have a shutter release cable, then you will have much more control. I have seen people use a two second exposure on a compact camera and they got a result, but not the kind of result we are going to try and achieve. Next you will need a tripod or a way of keeping the camera perfectly still for long periods. I once forgot my tripod head and successfully shot with my camera resting on my camera bag. Choose a tripod carefully, not too heavy, but not too light. You don't want to struggle carrying it over icy landscapes and you don't want the wind to be able to jog the camera. Try and choose one where it is easy to set up with your gloves on. A spare battery is very important. The cold zaps your battery and on average you battery life will be cut in half. Plenty of memory or film, it is not nice to run out. A good lens is important. If you can choose your lens, go for a fairly wide angle (24mm) and one with a large aperture f/2.8 is good.

Northern lights near Vatnjökull
Weather
The second consideration is the weather. If you are far north enough to see them, then you will probably have very changeable weather. The ideal conditions are very very clear skies. The moon plays an important role. It is a matter of taste, but I prefer not to have the moon in the shot. But having the moon behind you can really help to expose the landscape. This is enhanced further if the landscape is covered in snow. The wind can be a challenge... the less wind, the better. The most important weather consideration is space weather and you can check this on this site. If this site says it is good, then it will be good. The thing to look for (if you can't see anything yet) is a feint green streak across the sky, this is a good sign that it is worth waiting around for an hour or so.

Northern lights near Mýrdalsjökull
Exposure
OK, you have perfect weather and you have all the equipment. What do you do next? If you have a digital camera you can take many exposures and judge from your viewer. Use these exposure times as a rough guide:
|
ISO200
|
ISO400
|
||
| F stop | f/1.8 |
18-25 sec
|
5-17 sec
|
| f/2 |
22-30 sec
|
10-18 sec
|
|
| f/2.8 |
40-60 sec
|
22-30 sec
|
|
| f/4 |
80-120 sec
|
40-60 sec
|
|
Composition
Of course, the sky is going to be a major part of your image, but carefully composing some of the land will help give you image a sense of perspective. Favourites of mine are perfectly still water... this can be rare in Iceland, but a reflection shot is a real prize winner. If it is very dark, then look for some interesting shapes on the horizon. You might have to wait a while for the lights to appear, but if you spend this time taking some long night landscapes, you will have a better idea of composition when they arrive.

An HDR image from Hafravatn lake
HDR
Go for it if you have the patience. The image above was from two exposures: 30 seconds to capture the sky and 6 minutes to capture the foreground.
Tours
Experience this yourself with one of my Photography Tours
Workshops
Check out one of my Photography Workshops
2 Comments for this entry
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Night Photography – secrets uncovered « My Photo Blog
August 11th, 2009 on 8:18 pm[...] My Photo Blog Photography, techniques and technology weblog « Photographing Northern Lights – Aurora Borealis [...]
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Night Photography – secrets uncovered - Photography Techniques
August 13th, 2009 on 2:12 am[...] was my love and obsession of capturing the Aurora Borealis, which uncovered a new passion… night [...]
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Night photography 2 - overcoming the challenges | Iceland Aurora Photographic
November 27th, 2009 on 5:22 am[...] article naturally follows from Nigh photography 1 and relates to Photographing the Northern Lights Share and [...]
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December 10th, 2009 on 12:16 am[...] Experience this yourself with one of my Photography Tours How to photograph the Northern Lights Tutorial [...]
September 4th, 2010 on 2:27 pm
Hello Tony
You write:
“Go for it if you have the patience. The image above was from two exposures: 30 seconds to capture the sky and 6 minutes to capture the foreground.”
But how you eliminate long trails of stars?
I always have them, and when mere as HDR they’re still visible.
Regards
Rafal
September 4th, 2010 on 3:19 pm
Hi Rafal
the star trails at 30sec will be very minimal with a wide angle. When your HDR is complete bring the original 30sec exposure in (as a layer) and adjust the curves so that it matches the tonemapped version. Then blend in the layers. Alternatively, blend the 2 skies together using colour or saturation function.
Another way of eliminating star-trails – edit your longer exposure by selecting the sky area. Cut and paste (this will create a new layer) then set the blending to ‘Darken’ now use the ‘move’ tool and just click on the image and move it a pixels at a time using the up and down cursor keys (you may have to repeat this). When the stars have been eliminated, flatten the image, save and start the HDR process.
Hope this helps.
Tony