This was a pain to take...got up to the Hancock observatory and was told...no tripods. So, I had to MacGuyver it and rest the camera on a tiny little ledge around the tower, prop it up in a shoe, on my bag, whatever I could - and used my remote cord to take the 12 long exposures used to make 4 vertical shots. Those 4 sets of 3 were then each fused together to make 4 hdr photos, which I then stitched together to make a monster. Whew!