We just had a beautiful Aurora Australis hit New Zealand a couple of days ago. I was fortunate enough to catch a quiet spot to myself where I could take in the atmosphere and shoot a few images. My favourite from the night was a panorama shot of the Aurora to the south and the galactic core rising to the south east – it was the shot I planned and it seemed to turn out nicely [check out this blogpost if you want to learn how to stitch astro panoramas]. So nicely, it got published in the National newspaper and got me a fair bit of attention on my various social media sites. The frenzy that started with a few keen astronomers and astrophotographers led to a lot of people rushing to similar spots the night after to see if they can watch the aurora. Unfortunately, there were a few disappointed folk who not only couldn’t find a clear view, but also didn’t realise what you see in photos isn’t what you see with the naked eye.
I want to take this opportunity to try and explain the difference between what you see with the naked eye vs what the camera picks up and what subsequently gets shared on social media. To get a full understanding, let’s start with some basic biology.
The Human Eye Our eyes are made up of two main photo-receptor cells – these are the cells that are responsible for picking up light and helping us to see. Cones are fantastic at picking up details and colour but they are pretty useless in dark situations. Rods, on the other hand, are able to process a lot more light BUT are not able to process colours and details too well. The result, is that in the dark we tend to see things in monochrome/black & white. Rods also take some time to ‘activate’ – that is, when you walk from a light room into a dark room it takes a while for your eyes to adjust and get used to the dark scene. At first, you might not see anything but after 10-15 minutes it’s much easier to see in a darker environment. However, as soon as something bright gets shined into your eyes (like a torch or even a mobile phone screen) the rods shut down and the cones take over. When you look back into a dark space you have let the rods re-activate all over again, meaning you have to wait another 10-15 minutes or so. What does this mean for aurora spotting? Why does this matter? Well, for starters, unless you’re in a really bright space, like within the polar circles, the likelihood of you seeing enough brightness from an aurora so that you see colour is quite low. You may see some faint glows but not the vibrant, bright colours like I have in my photo above. Secondly, if you are flashing your torch around or constantly looking at your phone you will be very unlikely to allow your eyes to adjust to the darkness. Astronomy and aurora spotting in particular require patience, something I know I’m not very good at, but it takes discipline. If you do need light then think about getting a red torch light – it affects your eyes far less than bright white light. What does it look like to the naked eye? Here’s the best I could do to try and simulate the difference between what you see once your eyes have adjusted. If you just turn up and stick your head out of the door of the car you will likely not see much at all, but after a little while in the darkness you could see the structure, light and movement, but very little colour. The night I was out I could see a faint green glow and that’s about it. If you have a DSLR and a tripod you can get significantly more light information. What I typically do when I get to a nice spot is set my camera up, take a quick test shot and use that to gauge if there’s any action. The most exciting thing about the aurora is that it does move around in the sky. So, you could well see movement even if you don’t see colour. Here’s a timelapse from the other night for those that are interested:
Conclusion and Etiquette Basically, if seeing the Aurora is on your bucket list then absolutely go and do it, but make sure your expectations are tempered. If you are close to the poles you will get far, far more light, colour and movement. BUT, if you’re further away from the poles, then the best you’ll likely get is some awesome pillars of light dancing back and forth but nothing like you see in photos. The best you can do is to maximise your chances of getting a great show. So, here are a few pointers: If you’re new to aurora shooting, here’s a short video I put together from last year to help. Good luck and have fun!
About the Author
About the Author
Ekant Veer is an Associate Professor of Marketing at the University of Canterbury, New Zealand. When he’s not in the classroom he’s usually somewhere in the hills and mountains around Canterbury, taking landscape photos and enjoying nature in all its beauty. If you’d like to see more of his work, check out his website, like his Facebook page, and follow him on Instagram and his YouTube channel. This article was also published here and shared with permission.
