Watching a Meridian Flip

I took this video a couple years ago, but my scope does this automatically every imaging session. As it tracks objects across the sky following the Earth's rotation from East to West, eventually the telescope and camera would hit the tripod. To prevent this, the software instructs the mount to flip the telescope to the other side and rotate 180 degrees. The resulting images after flip are upside down, but the stack process easily aligns them together.