The CHARA Array

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Contact information, map and directions, contact form, opening hours, services, ratings, photos, videos and announcements from The CHARA Array, Nonprofit Organization, mount Wilson Observatory, Mount Wilson, CA.

The CHARA Array is a six telescope Optical/NIR interferometer run by Georgia State University and located on Mount Wilson Observatory, just north of Los Angeles in California USA.

10/02/2026

Astronomers using the CHARA Array have found that nearby stars darken toward their edges more strongly at near-infrared wavelengths than predicted by several widely used models of stellar atmospheres, providing a new benchmark for understanding the structure of stars.

The survey of 31 stars shows that widely used stellar-atmosphere models may underestimate how stellar brightness changes across a star’s surface.

09/18/2026

Faculty profile on Regent's Professor Douglas Gies who has spent nearly four decades at Georgia State University studying massive stars and helping build the Center for High Angular Resolution Astronomy into an international research resource.

Regents’ Professor Douglas Gies reflects on CHARA, massive-star research, student mentorship and nearly four decades at Georgia State University.

09/17/2026

The CHARA Array is marking a major new investment in the facility’s future as its global research community continues to expand.

The award will support completion of connections between telescopes in the Center for High Angular Resolution Astronomy (CHARA) Array, offering new opportunities to study the cosmos.

08/18/2026

Join us at Griffith Observatory on Thursday, August 20th at 7pm for an episode of All Space Considered that features a special guest segment on the CHARA Array.

https://griffithobservatory.lacity.gov/event/all-space-considered-august-2026/

Join the Griffith Observatory programming staff this Thursday for this month’s installment of All Space Considered and discover the latest insights and fresh perspectives from the world of space and astronomy.

Special guest segment with Gail Shaefer is the Director of the CHARA Array of Georgia State University. Shaefer will discuss recent science results from the CHARA Array, which measured the size of stars, images stellar surfaces, resolves the inner regions of planet-forming disks, and detects close stellar binary companions.

Griffith Observatory broadcasts this public program live from the Leonard Nimoy Event Horizon Theater on the third Thursday of every month. It is free to attend in-person or stream on YouTube. Foundation members receive priority seating to All Space Considered, among other benefits. By joining the Foundation, you take part in supporting Observatory programs like this one.

For more information, link in bio.

12/19/2025

A Scientific American article by Phil Plait gives a detailed overview on how arrays of telescopes like the CHARA Array are used to resolve the surfaces of stars:

A technique called interferometry can greatly magnify tiny objects on the sky, and is powerful enough to reveal the surfaces of nearby stars

12/05/2025

Astronomers captured images of two stellar explosions — known as novae — within days of their eruption and in unprecedented detail. The breakthrough provides direct evidence that these explosions are more complex than previously thought, with multiple outflows of material and, in some cases, dramatic delays in the ejection process.

Using Georgia State’s CHARA Array, scientists from around the world reveal the surprising complexity of stellar explosions.

Address

Mount Wilson Observatory
Mount Wilson, CA
91023

Website

http://www.chara.gsu.edu/

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