The Columbus Optical SETI Observatory Sign
Stuart Kingsley in Dome (1999)
COSETI Fence Sign (1994)
The sign on the inside of the fence to the north of the dome reads:
Site of North America's first visible observatory dedicated to the optical search for extraterrestrial intelligence (OSETI) and the detection of pulsed interstellar laser beacons.
Director: Dr. Stuart A. Kingsley