Tenagra Observatories
Satellite imagery: Esri, Maxar, Earthstar Geographics
Tenagra Observatories is an international network of astronomical sites with facilities in Oregon, Arizona, Norway, and Western Australia — this entry covers its original site near Cottage Grove, Oregon.
About Tenagra Observatories
Incorporated in Oregon in 1992, Tenagra Observatories grew from a single site into a multi-continent network built around photometric and asteroid research. The Cottage Grove facility, established around 1998, uses a 14-inch Celestron Schmidt-Cassegrain telescope with an SBIG CCD imager.
Telescopes & research
Across its network, Tenagra Observatories has focused on photometric studies, supernova detection, minor planet discovery, and variable star analysis, with research partnerships including Lick Observatory, the U.S. Naval Observatory, Caltech, Wesleyan University, and the University of North Carolina. Its Arizona site, Tenagra II, added a 32-inch Ritchey-Chrétien telescope operational since 2001.
Location & getting there
The Oregon site sits near Cottage Grove, in the forested Willamette Valley region south of Eugene, a quieter rural setting compared to the network's other locations.
Visiting Tenagra Observatories
As a working research network, Tenagra Observatories is not primarily set up for public tours. Check its official website for the latest on visiting or contact information before travelling.
See your named star from here
A research network built on tracking precise celestial coordinates is a fitting place to think about a star named through Star Register, which comes with coordinates of its own. Explore our star packages and catalogue to find yours.
Opening hours and public-visit programs vary by season. Check the official website and Google Maps for current times before you travel.





