Quote:
Originally Posted by 46zilzal
Our Finish Lynx system had a calibration program that I ran pre-race each day, that assured (based upon STABLE points perpendicular to opposite sides of the track) where the exact point of the finish line was. In British Columbia, we had a federal regulator (we called him regulator Rick) who would RANDOMLY come up to my office and have me run that program in his presence to assure it was done regularly. When you ran the program, those stable points would leave an image (when the camera was running continuously) would leave EQUALLY spaced lines on the top and bottom of the scan.....If they were NOT equal,we would have to carefully manipulate the angle of the camera until they were of equal representation on the continuous scan.
I had to trudge out to the inner rail at once or twice a season, and clean the mirror (particularly when the Woodbine surface was PolyTrack that stuck on everything including your shoes walking out there...NASTY STUFF particularly when it got hot out)
If there was ANY question about perpendicularity (which I NEVER SAW) it would have been most likely from NOT having run that calibration program. On the computer screen image we had a perpendicular line that was mobile (laterally) that would be placed over each nose...IF the mirror and scanned image were out of alignment, that line WOULD NOT touch both noses exactly the same and that was something I NEVER SAW ONCE at the thoroughbreds of standardbreds.
To the original question: CENTER of the mirror
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Tech is a wonderful thing. Lol. We could have used it back when I worked the placing stand. Omg.. I HATED to walk across a wintry or wet surface. It was unavoidable, though, on days when I operated the infield tele-timer. But that's another topic for another time.
