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URL: https://www.seti.org/research/hcro

⇱ Hat Creek Radio Observatory


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Research

Welcome to Hat Creek Radio Observatory

We are home to the Allen Telescope Array, the only instrument designed specifically for the purpose of conducting SETI research.

If you are interested in visiting HCRO, we are located approximately 300 miles NE of San Francisco, in Shasta County, California. A self-guided tour is available during opening hours.

Our visitor hours are:

Thursday-Friday 9:00 AM - 3:00 PM
Saturday-Wednesday Closed

Address:

42231 Bidwell Rd
Hat Creek, CA 96040

WARNING: HCRO is an active research site. Cell phone signals can interfere with ongoing operations. When you visit, cell phones and other GPS equipment must be turned off.

Carol Shumaker,
Site Maintenance Technician

Mark Masters,
Technician

Collaborators and Consultants

Dr. David DeBoer, 
Management and Operations

Dr. Wael Farah,
Project Scientist, ATA

Dr. Jack Hickish,
Digital Signal Processing ATA

Derek Kozel,
GNU Radio, ATA

Todd Koumrian,
Software and Control, ATA

Dr. Cherry Ng,
Project Scientist,
COSMIC/Meerkat

Dr. Sofia Sheikh, 
Technosignature Research Scientist

Video

How SETI Designed A Telescope To Look For Extraterrestrial Civilizations

In 2025, we invited Scott Manley for a tour of the Allen Telescope Array in Hat Creek, CA. Take an in-depth look of the facilities and research happening at the Hat Creek Radio Observatory!

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