| Organization | NASA |
|---|---|
| Location | Flagstaff, Arizona |
| Coordinates | |
| Altitude | 2146.2 meters (7042 feet) |
| Webpage | |
| Telescopes | |
| Telescope | Unknown size reflector |
The Robotic Lunar Observatory, or ROLO, was an astronomical observatory funded by NASA, located at the USGS Flagstaff Field Center in Flagstaff, AZ, atop McMillan Mesa. Its purpose was to establish the Moon as a radiance calibration source for Earth-orbiting remote sensing spacecraft.