The sun was particularly active last weekend, promising spectacular aurora with KP values of over 7. Unfortunately, the expected nighttime display failed to materialise. Instead, I swung my camera around and took 10 30-second exposures of the night sky, with the trees of a nearby road.
After combining them in Photoshop this is what you get. Not bad for 300 seconds.
Star trails form circular patterns around the celestial pole due to the Earth’s rotation, and in the Northern Hemisphere, these circles are centred on Polaris, the North Star, which barely moves at all in the sky. I wasn’t sure where Polaris was, but it looks like it’s just off the photo.
| Aperture | ƒ/2.8 |
| Camera | ILCE-7RM5 |
| Focal length | 24mm |
| ISO | 1600 |
| Shutter speed | 30s |
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