Star trails over Ludgershall Castle

Ludgershall Castle is a ruined 12th century royal residence in Wiltshire. I made 110 30-second exposures at F/2.8 and ISO 1600, which I combined in processing to show the result of Earth's rotation over one hour. Because the castle was close to my camera, I needed additional depth of field to get it sharply focused so I made an additional exposure at F/8 for 4 minutes for the foreground. The terrestrial landscape is lit by gibbous moonlight.