Startrails
I love working and playing with the stars in the nightly sky. Using long time exposures, typically at least 20 minutes and sometimes up to more than an hour, the stars' apparent motion creates these trails in the sky, aka star trails. Often I use different colored flashlights to illuminate part of the scene to add or highlight other visual elements. Good examples for that are the service station, the Potrero Point power plan and the house at Sea Ranch.