Just playing around this morning. I got up at 4H30 this morning and decided to play around with a star trail again while I wait for the day.
I took a total of 82 thirty second exposures, and then put them together (lighten only) with gimp.
Since my boys have found my tripods good for shooting aliens, building tents, hitting each other and fixing cars, they don't work for holding cameras. So this is probably the only stacked star trail you have ever seen done by placing the camera on a blanket on the ground.
I'm so impressed by the number of views I have got and even my family is impressed, so, I'll do more.