My wife and I have been to San Diego many times and have spent some time on Coronado Island, shopping and such. I had always wanted to take a blue hour nighttime cityscape of  the San Diego skyline from across the harbor at Coronado Island. The blue hour is the period of twilight each morning and evening where there is neither full daylight nor complete darkness. The time is considered special because of the quality of the light. We finally planned for and made the trip on 8/2/13. We got to Coronado early and scouted around for just the right location. I took several preliminary photos to help decide. I have posted both the preliminary and the final image. All that was left was to wait for that magic Blue Hour to arrive. We went to have an early dinner in time to arrive back at our location by about 7:45pm. So I got the tripod and camera all setup. I used my Gitzo tripod in order to have a very stable platform to shoot from. Attached to it was my Nikon D7100 with the Nikon 24-70mm lens. On the lens I attached a Hoya FLW magenta filter. Sunset was at 7:53pm that night and I wanted to begin shooting around 25 to 30 minutes after sunset, approximately 8:20pm. The first few shoots were just to get the feel of the settings in the camera and to make any adjustments necessary. This final photo ended up being ISO 320, F11, for 10 seconds. I always have the built in noise reduction on, so after the initial 10 second exposure, there is another 10 seconds for the camera to perform the internal reduction. During this process, I had to contend with the normal boat and airplane traffic in the area, which was just a matter of timing. Very little post-processing was done to this photo, other than minor cropping and sharpening. This was a great trip and many thanks to my wife for the support with the scouting and setup.