Star Trails

Star trails over Shortland, Australia, 2013

Here’s a shot I took, erm, a year ago, playing around with ultra long exposures. Or, to be more precisely, simulating an ultra-long exposure by stacking many individual exposures.

On the shooting side, I simply set my camera to manual mode, 30s exposures in continuous drive mode and used a lockable remote release to fire off one shot after another (having disabled the dark-frame subtraction function as missing out 30s between each exposures produces ugly dotted lines rather than smooth trails).

Then, to “merge” the images, there are a fair few programs available. A well working, free and cross-platform one would be StarStaX.

As you can see in the little EXIF table below, this slightly confusing and anything but pretty photo was taken over the course of 11┬áh, out the back from our bedroom balcony. A bit of math tells you that’s more than 1300 exposures, all in the spirit of experimentation…

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