CHARA research is focused on studying the astrophysical properties of stars at high angular resolution using long-baseline optical/infrared interferometry. The Center operates the CHARA Array, a six-telescope optical/infrared interferometric array on Mount Wilson, California. The CHARA Array provides the highest resolution of any telescope at visible and near-infrared wavelengths making it among the most powerful facilities in the world for studying stars and stellar systems at resolutions not previously available. Among the Array's "firsts" are:

* First direct detection of gravity darkening on a single star  (Regulus)

* First direct measurement of the "P-factor" in the Baade-Wesselink method (δ Cep)

* First detection of hot exozodiacal dust around a main-sequence star (Vega)

* First model-independent measurement of an exoplanet diameter (HD 189733b)

* First angular diameter for a halo population star (μ Cas)

* First image of a single, main-sequence star (Altair)

* First direct image of an interacting binary (β Lyr)

* Shortest-period (1.14 days) binary star system yet resolved (σ2 CrB)

* First image of a binary star system in eclipse (ε Aur)


See Publications for refereed publications and technical reports.

See Science Highlights for an overview of the science topics being investigated at the CHARA Array.