My trip up the tower at SFO got me thinking about what things I wanted to get done while I was there. One thing I had in mind was a time lapse. I was a bit bothered, though, because we would only have about 20 minutes and setting up the camera and getting it going would eat into that time. Fortunately, Nancy had just given me a new GoPro to replace the one I killed in Hawaii. This one had a time lapse function built in. Also, because it is small, it would be easier to get it close against the glass to minimize (but not totally remove) reflections.
When we got up the tower, I went straight to the window, hit the start button and leaned the camera against the glass. I had no idea whether it was working or not so just left it and hoped. I then started taking the other shots I was after. When our time was up, I had to remember to go and get it again. Only when I got home did I find out that it had taken a steady string of images. I then processed them using my usual software of LRTimelapse aided by the lens correction in Lightroom for the GoPro. The result is this video. It is a little wide angle for some of the distant action and it would have been fun to have a longer time to capture images over but, overall, it worked out quite well.