This is brilliant, thanks for posting. Things like this make me miss my deceased father. I would love to discuss this with him. He was the only person I knew

This is brilliant, thanks for posting. Things like this make me miss my deceased father. I would love to discuss this with him. He was the only person I knew of that genuinely loved thoroughbred horse racing for the beauty of the animals and for the sport. We would camp out right on the finish line at Belmont park (and often on random weekends when the place was mostly empty) and stay put for hours waiting for the Belmont Stakes. He was an amateur photographer and once got a press pass to photograph from the trench along the outside of the track. I noticed the tall narrow mirror mounted to the finish line pole, and he said it was for the photo finish camera but, not much elaboration beyond that.