Here’s a a short clip of some time-lapse photography I took in Kilkenny City last night. While time-lapses are fun to watch, they usually consist of life (humans, nature, engineering) sped up to show slow progress over a quick period.

However, instead of a time-lapse showing people scurrying about the place, I wanted to show the earth itself rotating, because when everyone is done moving for the day and stationary at home in bed, the world continues to spin.

Digital cameras make it easier to do these slow-shutter lapses, so I pointed my camera at the clock tower of the Kilkenny Design Centre and then directly across the road to the entrance gate of the castle itself. Photography like this is slow, it can take an hour to get enough pictures to make 5 seconds of video and that’s why the clip is so short.

To break it down, depending on the time-lapse picture you’re capturing, it can take up to 30 seconds to get one picture (you leave the shutter open for 30 seconds to let enough light in to capture the stars). In turn, it takes 25-30 pictures to make 1 second of video.

I was lucky last night. The redesign of the area outside Kilkenny Castle means the harsh orange street lights that usually populate urban areas, and drown out our view of the stars, have been removed in favour of more subtle lighting. While that helped, the subtle lighting then shut off shortly after midnight. Whether that was for energy saving reasons (which I applaud) or whether they went on the blink (which wouldn’t surprise me!) the area was left covered by moonlight which was unusual but perfect!