With the sun set for the day, the crowds along Darwin\'s shoreline had begun to go home, but some people stayed to enjoy the \'blue hour\', a time when the sky provides some magical colour - if you keep an eye open for it. Or a lens…. This image is a composite of three images made while the camera was on a stable tripod, with each image being quite a long exposure, and then processed in Aurora HDR software. The effect of the long exposures is to render a silky smoothness to what was actually a slightly choppy sea. The blue hour is a great time for photography - different that the golden hour that occurs on the other side of the sun rise/set, and shooting both can provide some interesting variety in the space of a couple of hours.