THE ASTRODOME’S FIRST SOLUTION TO ITS CAN’T-SEE-THE-BALL PROBLEM Before players had that problem losing fly balls in the glare, before a portion of the skylights were painted over, before anyone in Houston had ever considered replacing the outfield grass with something called AstroTurf, there was another system installed in the Astrodome meant to help baseball players keep their eyes on the ball. The Houston Chronicle‘s special section on the Harris County Domed Stadium — on the occasion of its 50th anniversary (today) and birthday party open house (tonight) — includes a reprint (PDF) of the same newspaper’s Astrodome extra from April 8, 1965, the day before opening day. And featured on page 62 is a short preview of the stadium’s space-age air-cleaning technology: “An unusual Honeywell-engineered ultraviolet sensor will run a continual check on the transparency of the air. If it gets murky — from dust or tobacco smoke — the system will signal stadium engineers to open a battery of cupola exhaust dampers. Because air cleaners continuously scrub the air electronically, then pass it through special charcoal filters to sieve out any odors, air inside the stadium normally will be fresher and cleaner than the air outside. ‘In fact, it should be the cleanest air in all Texas,‘ says Lamar Bordelon, Honeywell project engineer on the stadium job. The Honeywell system has an ultraviolet lamp underneath the seats along the third-base line, focused on an ultraviolet sensor in similar position along the first-base line, 700 feet across the stadium. These continuously indicate the transparency of the air between them on a meter located on the control center. Any time the transparency of the air drops to the point where a player would have a hard time seeing a baseball in play 350 feet away, a warning light flashes on.” [Houston Chronicle] Photo: Russell Hancock