I physically rotated the camera last night using the Framing and Mosaic wizard setup. The SGP pop up window told me how much I needed to rotate in degrees each time I tried until it was right. It took me four tries before it was the correct angle. All seemed to work perfectly after that and even PHD2 worked without recalibration. I have no idea how I guessed the correct angle after only 4 tries.
My questions are 1. Should I have recalibrated or does PHD2 know when the camera is rotated. 2. Is there an easier/ quicker/more accurate way to physically rotate the camera other than guessing the degrees (someone mentioned a ring or sticky tape that could be purchased that shows degrees ???) . My 3 panel mosaic was very precise, beginners luck or did I actually do everything correctly ??