From it’s perch on the 10,000 ft (3,000 km) Haleakala crater on Maui.
From the JPL/NASA press release (click for an animation):
“Finding 10,000 near-Earth objects is a significant milestone,” said Lindley Johnson, program executive for NASA’s Near-Earth Object Observations Program at NASA Headquarters, Washington. “But there are at least 10 times that many more to be found before we can be assured we will have found any and all that could impact and do significant harm to the citizens of Earth.” During Johnson’s decade-long tenure, 76 percent of the NEO discoveries have been made.
Pan-STARRS is Managed by the University of Hawaii, the PanSTARRS survey receives NASA funding.