THE SITE

Sierra Remote Observatories is uniquely situated on the western edge of the Sierra Nevada Mountains, about 50 miles South of Yosemite National Park.  SRO is unique in having excellent darkness and seeing conditions while also being relatively close to a major metropolitan area, allowing for easy access. We provide the excellent seeing conditions and infrastructure, so you can concentrate on imaging and data collection.  Our site has:

   • more than 140 telescopes currently on-site
   • 1 arcsecond average summer seeing
   • 1.2 arcsecond average winter seeing
   • subarcsecond peak seeing
   • dark skies
   • average wind speeds of 1 mph
   • rare thunderstorms
   • no summer monsoons
​   • 290 clear nights/year
 

Select 'The Site' Submenus for site information and images, including overhead images and videos

Our clients include astronomers from universities and astronomical institutes, space industry professionals and astrophotographers.