"Star Trails in The Gap of Dunloe"
Taken on a Cold Night in early January. I took a five minute long photograph to expose for the foreground. I was fortunate that a car drove into frame as I was taking the shot. The light trail along the road is the car driving along the road to Kate Kearneys over a five minute period.
I then took 250 shorter photographs of the night sky over a 90 minute period. Each of these photos shows the stars have moved slightly in their position. You then blend all of these together to give the impression of movement across the night sky.
So what you are actually seeing in effect is the earth's rotation through the solar system in a 90-110 minute period in relation to the stars.