Using a tripod, I effected the original framework using a compass to position the south (center of circles) in one-thirds of the frame, leaving the other third of the pier. I took the first photo just after sunset, on that time when there is still enough light to illuminate the foreground landscape. I waited until the sky (a new moon night) becomes totally dark, leaving only the visible stars. Using a remote trigger timer, I began a sequence of shots with 3.5 minutes duration each, which lasted six hours, at which time some clouds arrived and had to interrupt the sequence. I took the first photo using Adobe Lightroom and applied a gradual ND filter in the sky, making it very dark, but leaving intact below the horizon line. Then, using photoshop, I effected the merger of all images using the option Lighten.