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Optical interferometer on Mount Wilson, California
The CHARA (Center for High Angular Resolution Astronomy) array is an optical interferometer, located on Mount Wilson, California. The array consists of
CHARA_array
Astronomical observatory in Los Angeles County, California, US
in 1908, the 150-foot (46 m) solar tower completed in 1912, and the CHARA array, built by Georgia State University, which became fully operational in
Mount_Wilson_Observatory
Topics referred to by the same term
related to Chara. Chara (alga), a genus of algae in the family Characeae Chara (moth), a genus of moths in the family Noctuidae CHARA array, a telescope
Chara
Effective Temperatures of B-type Stars from Optical Interferometry with the CHARA Array". The Astrophysical Journal. 873 (1): 91. Bibcode:2019ApJ...873...91G
List of stars with resolved images
List_of_stars_with_resolved_images
Northern pole-star; brightest star in Ursa Minor
inner binary using the interferometric CHARA Array. They improved the solution of the orbit: combining CHARA data with previous Hubble data, and in tandem
Polaris
Brightest star in the constellation Lyra
2001 and then later confirmed with the CHARA array at Mt. Wilson in 2006 and the Infrared Optical Telescope Array at Mt. Hopkins in 2011, revealed evidence
Vega
F.; Thompson, R. R.; Coyne, J. (2006-01-20). "First Results from the CHARA Array. III. Oblateness, Rotational Velocity and Gravity Darkening of Alderamin"
List of nearest stars by spectral type
List_of_nearest_stars_by_spectral_type
Telescope in the Atacama Desert, Chile
the resolution achieved using other arrays such as the Navy Prototype Optical Interferometer and the CHARA array. Unlike many earlier optical and infrared
Very_Large_Telescope
Mountain in California, United States
60-foot (18.3 m) and 150-foot (45.7 m) tall solar towers. The newer CHARA array, run by Georgia State University, is also sited there and does important
Mount_Wilson_(California)
Array used for astronomical observations
expected to produce their first images soon, including the VLTI, the CHARA array and Le Coroller and Dejonghe's Hypertelescope prototype. If completed
Astronomical_interferometer
Hypergiant star in the constellation Cepheus
great dimming event, and it was subsequently observed by the CHARA interferometry array in December. The distance to RW Cephei has been estimated on the
RW_Cephei
2024). "The Orbit and Dynamical Mass of Polaris: Observations with the CHARA Array". The Astrophysical Journal. 971 (2): 190. arXiv:2407.09641. Bibcode:2024ApJ
List_of_largest_stars
Star in the constellation Cygnus
Located 2,090 parsecs (6,800 ly) from Earth, it has been studied by the CHARA array in order to understand the surface variations of red supergiants. AZ
AZ_Cygni
Star in the constellation Lacerta
main-sequence. It is the star with the smallest angular diameter measured by the CHARA array as of 2018[update], at 0.11±0.02 milliarcseconds. 10 Lacertae has an
10_Lacertae
Astronomical observatory network in southern France
(CERGA) Cote d'Azur Observatory tested beam combining technology at CHARA array. Astronomers developed a theory about M-Type asteroids, that may be tested
Côte_d'Azur_Observatory
Astronomical methodology
synthesis soon,[needs update] followed by other interferometers such as the CHARA array and the Magdalena Ridge Observatory Interferometer which may consist
Astronomical optical interferometry
Astronomical_optical_interferometry
Star in the constellation of Cepheus
parsecs or approximately 49 light years from Earth. Interferometry by the CHARA array show that Alderamin has an oblate shape, its equatorial size measures
Alpha_Cephei
Multiple star system in the constellation of Lyra
accretion disk of the secondary star were resolved and imaged using the CHARA Array interferometer and the Michigan InfraRed Combiner (MIRC) in the near
Beta_Lyrae
Extrasolar planet in the Andromeda constellation
not detected using high-resolution inferterometric observations by the CHARA array. The planet orbits a (F-type) star named Titawin (Upsilon Andromedae
Upsilon_Andromedae_b
Brightest star in the constellation Aquila
from 2006 infrared observations made with the MIRC instrument on the CHARA array interferometer; this was the first time the surface of any main-sequence
Altair
Yellow hypergiant star in the constellation Cassiopeia
infrared. In 2023, Rho Cassiopeiae was imaged through interferometry at the CHARA array. The star was observed at the H and K near-infrared wavelengths, and
Rho_Cassiopeiae
Public university in Atlanta, Georgia, US
Moderate Aperture Research Telescope System (or SMARTS) in Chile, and the CHARA array on Mount Wilson Observatory in Los Angeles County, California, Hard Labor
Georgia_State_University
Triple star system in the constellation Orion
Effective Temperatures of O-type Stars from Optical Interferometry with the CHARA Array". The Astrophysical Journal. 869 (1): 37. arXiv:1812.05511. Bibcode:2018ApJ
Alnitak
Star in the constellation Perseus
SU Persei was imaged by the CHARA array in 2015, 2016, 2019, 2020, and 2021. Observations during 2015 and 2016 with CHARA show that the star has an angular
SU_Persei
Recurrent nova in the constellation Corona Borealis
Justin (June 10, 2026). "Pre-nova Observations of T CrB: A view from the CHARA Array". The Astrophysical Journal Letters. 1004 (1): L13. arXiv:2606.17272
T_Coronae_Borealis
Brightest star in the constellation Leo
Grundstrom; Ogden; Ridgway; Van Belle; et al. (2005). "First Results from the CHARA Array. I. An Interferometric and Spectroscopic Study of the Fast Rotator Alpha
Regulus
Multiple star in the constellation Taurus
years. The angular diameter of this star has been measured using the CHARA array to 2% accuracy. After correcting for limb darkening, this gives the stellar
Gamma_Tauri
Brightest star in Earth's night sky
Aufdenberg, J.P.; Ridgway, S.T.; et al. (2006). "First results from the CHARA Array: VII. Long-Baseline Interferometric Measurements of Vega Consistent with
Sirius
Star in the constellation Cassiopeia
measurements have been made since then, for example, observations with the CHARA Array yield an uniform disk angular diameter of 5.502±0.023 mas in the H band
Alpha_Cassiopeiae
Star system in the constellation Taurus
Sturmann, L.; Sturmann, J.; Turner, N. H.; Farrington, C. (2013). "A CHARA Array Survey of Circumstellar Disks around Nearby Be-type Stars". The Astrophysical
Alcyone_(star)
Star in the constellation Pegasus
Adric R.; Ireland, Michael; von Braun, Kaspar (21 November 2012). "The CHARA Array Angular Diameter of HR 8799 Favors Planetary Masses for Its Imaged Companions"
HR_8799
letters. T.A. ten Brummelaar; et al. (2005). "First Results from the CHARA Array. II. A Description of the Instrument". Astrophysical Journal. 628 (1):
List of astronomical interferometers at visible and infrared wavelengths
List_of_astronomical_interferometers_at_visible_and_infrared_wavelengths
Stellar classification
Riedel, Adric R.; Ireland, Michael; von Braun, Kaspar (2012-12-10). "The Chara Array Angular Diameter of Hr 8799 Favors Planetary Masses for ITS Imaged Companions"
A-type_main-sequence_star
Star system in the constellation Cassiopeia
DR3 record for this source at VizieR. Klement, R.; et al. (2024). "The CHARA Array Interferometric Program on the Multiplicity of Classical Be Stars: New
Gamma_Cassiopeiae
Constellation in the northern celestial hemisphere
Spectroscopic Binary σ2 Coronae Borealis from Interferometry at the Chara Array". The Astrophysical Journal. 690 (1): 394–406. arXiv:0808.4015. Bibcode:2009ApJ
Corona_Borealis
Five-star system in the constellation Orion
components of σ Orionis A have been resolved interferometrically using the CHARA array, and the combination of interferometric and visual observations yields
Sigma_Orionis
other astronomical telescope arrays including: the Navy Prototype Optical Interferometer, the CHARA array, and the IOTA array. In 2008, Max Tegmark and Matias
History_of_the_telescope
Spectroscopic binary star in the constellation Hercules
long baseline interferometry. Interferometric observations from the CHARA Array enabled its three dimensional orbit with a semimajor axis of 2.01 ± 0
AC_Herculis
Star in the constellation Orion
Effective Temperatures of O-type Stars from Optical Interferometry with the CHARA Array". The Astrophysical Journal. 869 (1): 37. arXiv:1812.05511. Bibcode:2018ApJ
Meissa
Star in the constellation Pegasus
Effective Temperatures of B-type Stars from Optical Interferometry with the CHARA Array". The Astrophysical Journal. 873 (1): 91. Bibcode:2019ApJ...873...91G
Alpha_Pegasi
Archived from the original on 7 December 2018. Retrieved 27 July 2018. "CHARA Array". "Contacts - astrosat". astrosat.iucaa.in. "SPARCS". Evgenya Shkolnik
List of women in leadership positions on astronomical instrumentation projects
List_of_women_in_leadership_positions_on_astronomical_instrumentation_projects
American astronomer
She studied the sizes of nearby stars similar to the Sun, using GSU's CHARA array, a long-baseline optical and infrared interferometer located at Mount
Tabetha_S._Boyajian
Star in the constellation Draco
Sigma Draconis has been directly measured using interferometry with the CHARA array, which yields a result of 77.6% of the Sun's radius at the star's distance
Sigma_Draconis
US Navy astronomical interferometer
also used to align the long train of optics. The NPOI siderostat array and the CHARA Array are the world's only long-baseline optical interferometers that
Navy Precision Optical Interferometer
Navy_Precision_Optical_Interferometer
Star that is particularly similar to the Sun
Dwarfs s Draconis and HR 511 from Interferometric Measurements with the CHARA Array". The Astrophysical Journal. 683 (1): 424–432. arXiv:0804.2719. Bibcode:2008ApJ
Solar_analog
Triple star system in the constellation Aquila
angular diameter has been precisely determined using interferometry at the CHARA array, which combined with its estimated distance, result in a radius 3.123
Beta_Aquilae
Historically black university in Savannah, Georgia, US
Southern Polytechnic State University Waycross College Research GSU CHARA array Hard Labor Creek Observatory Georgia Tech ATDC IRIM GTRC GTRI Nanotechnology
Savannah_State_University
Star in the constellation Leo
than the Sun's age of 4.6 billion years. Using interferometry with the CHARA Array, its diameter was determined to be 11.74 times that of the Sun. Mu Leonis
Mu_Leonis
Star in the constellation Taurus
Effective Temperatures of B-type Stars from Optical Interferometry with the CHARA Array". The Astrophysical Journal. 873 (1): 91. Bibcode:2019ApJ...873...91G
Beta_Tauri
(2024-08-01). "The Orbit and Dynamical Mass of Polaris: Observations with the CHARA Array". The Astrophysical Journal. 971 (2): 190. arXiv:2407.09641. Bibcode:2024ApJ
List_of_nearest_supergiants
Star in the constellation Cassiopeia
449±20 R☉ at its estimated distance. More recent observations with the CHARA array in 2023 found a slightly lower angular diameter of 1.195±0.007 mas, yielding
V509_Cassiopeiae
Binary star system in the constellation Cepheus
(2026-09-18). "Multi-chromatic observations of classical Cepheids using the CHARA Array interferometer. Surface brightness-colour relation, projection factor
Delta_Cephei
Star in the constellation Cygnus
with a radius around 850 R☉, measured by its angular diameter by the CHARA array. It is about 90,000 times more luminous that the Sun and has a cool effective
BI_Cygni
Star in the constellation Auriga
optical companions. A new potential companion was discovered using the CHARA array in 2023. In December 2017, it had an angular separation from AE Aurigae
AE_Aurigae
Star in the constellation Perseus
Effective Temperatures of O-type Stars from Optical Interferometry with the CHARA Array". The Astrophysical Journal. 869 (1): 37. arXiv:1812.05511. Bibcode:2018ApJ
Xi_Persei
Star in the constellation Gemini
Epsilon Geminorum has been directly measured using interferometry with the CHARA Array, which yields a result of 137±6 times the radius of the Sun at the star's
Epsilon_Geminorum
Star in the constellation Gemini
(2026-09-18), "Multi-chromatic observations of classical Cepheids using the CHARA Array interferometer. Surface brightness-colour relation, projection factor
Zeta_Geminorum
Star in the constellation Draco
ISSN 0004-637X. Berger, D. H.; et al. (2006). "First Results from the CHARA Array. IV. The Interferometric Radii of Low-Mass Stars". The Astrophysical
Gliese_687
Star in the constellation Aries
Effective Temperatures of B-type Stars from Optical Interferometry with the CHARA Array", The Astrophysical Journal, 873 (1): 91, Bibcode:2019ApJ...873...91G
Gamma_Arietis
and limb darkening of the asteroseismic red giant η Serpentis with the CHARA Array". Astronomy and Astrophysics. 517: A64. Bibcode:2010A&A...517A..64M.
List_of_nearest_giant_stars
Variable star in the constellation Ursa Major
Ursae Majoris was measured in red light during 2015 and 2016, using the CHARA array. The limb darkened angular diameter was 0.226±0.008 milliarcseconds.
84_Ursae_Majoris
Star in the constellation Pisces
angular diameter has been directly determined by interferometry using the CHARA array, yielding a radius 86.4% of the Sun's radius. The rotational period of
54_Piscium
Red-clump giant star in the constellation Aquila
stellar companion can be ruled out based upon observations with the CHARA array. In 2008, the presence of a planetary companion was announced, based
Xi_Aquilae
Star in the constellation Draco
"Fundamental Parameters of the Exoplanet Host K Giant Star ι Draconis from the CHARA Array", The Astrophysical Journal, 743 (2): 130, arXiv:1109.4950, Bibcode:2011ApJ
Iota_Draconis
Spectroscopic binary star system in the constellation Perseus
0.6. It has also been spatially resolved with interferometry at the CHARA array. There are distant companions B (separation 75.5" and magnitude 10.66)
43_Persei
Binary star in the constellation Draco
Effective Temperatures of B-type Stars from Optical Interferometry with the CHARA Array", The Astrophysical Journal, 873 (1): 91, Bibcode:2019ApJ...873...91G
Zeta_Draconis
Star in the constellation Cassiopeia
Effective Temperatures of B-type Stars from Optical Interferometry with the CHARA Array", The Astrophysical Journal, 873 (1): 91, Bibcode:2019ApJ...873...91G
Zeta_Cassiopeiae
Binary star system in the constellation Pisces
Ba-Bb Subsystem in α Piscium: First Dual-Field Interferometry at the CHARA Array", The Astronomical Journal, arXiv:2603.09489. Gray, R. O.; Garrison,
Alpha_Piscium
Double star system in the constellation Camelopardalis
early B class subgiant. An additional star was discovered using the CHARA array, and has a mean separation from 1 Camelopardalis A of 26.16 mas. There
1_Camelopardalis
Multiple star system in the constellation of Auriga
like a 550 K black body. The 2009–2011 eclipse was well observed and CHARA array was able to directly image the shape of the disk in a silhouette. The
Epsilon_Aurigae
Binary star system
Dwarfs σ Draconis and HR 511 from Interferometric Measurements with the CHARA Array". The Astrophysical Journal. 683 (1): 424–432. arXiv:0804.2719. Bibcode:2008ApJ
Mu_Cassiopeiae
Star in the constellation Pegasus
Effective Temperatures of B-type Stars from Optical Interferometry with the CHARA Array". The Astrophysical Journal. 873 (1): 91. Bibcode:2019ApJ...873...91G
Zeta_Pegasi
Star in the constellation Auriga
has not been confirmed. The strongest evidence was found in 2013 using CHARA array optical interferometry. The companion would be 6.7 magnitudes fainter
RT_Aurigae
Star in the constellation Virgo
S. T.; Aufdenberg, J. P.; Merand, A. (2006), "First Results from the CHARA Array. IV. The Interferometric Radii of Low-Mass Stars", The Astrophysical
Gliese_514
Star in the constellation Cepheus
Effective Temperatures of B-type Stars from Optical Interferometry with the CHARA Array". The Astrophysical Journal. 873 (1): 91. Bibcode:2019ApJ...873...91G
Beta_Cephei
Star in the constellation Lyra
Effective Temperatures of B-type Stars from Optical Interferometry with the CHARA Array". The Astrophysical Journal. 873 (1): 91. Bibcode:2019ApJ...873...91G
Gamma_Lyrae
Variable star in the constellation Cygnus
(2024-08-01). "The Orbit and Dynamical Mass of Polaris: Observations with the CHARA Array". The Astrophysical Journal. 971 (2): 190. arXiv:2407.09641. Bibcode:2024ApJ
V1334_Cygni
Star in the constellation Cetus
signature was confirmed using the separated fringe packet technique with the CHARA array. It is most likely a K-type main-sequence star with a class of K3.5 V
13_Ceti
Star in the constellation Gemini
"Ruling Out Possible Secondary Stars to Exoplanet Host Stars Using the CHARA Array". The Astronomical Journal. 140 (1): 167–176. arXiv:1005.2930. Bibcode:2010AJ
HD_50554
Star in the constellation Hercules
Effective Temperatures of B-type Stars from Optical Interferometry with the CHARA Array". The Astrophysical Journal. 873 (1): 91. Bibcode:2019ApJ...873...91G
Iota_Herculis
Multiple star in the constellation Aquila
(2026-09-18), "Multi-chromatic observations of classical Cepheids using the CHARA Array interferometer. Surface brightness-colour relation, projection factor
Eta_Aquilae
Star in the constellation Ursa Major
"Angular Diameters and Effective Temperatures of 25 K Giant Stars from the CHARA Array". Astrophysical Journal. 710 (2): 1365–1374. arXiv:0912.5491. Bibcode:2010ApJ
4_Ursae_Majoris
Star in the constellation of Cygnus
Gordon, Kathryn; Pablo, Herbert; Ramiaramanantsoa, Tahina (2016). "The CHARA Array resolves the long-period Wolf–Rayet binaries WR 137 and WR 138". Monthly
WR_137
Georgia State University for adaptive optics upgrade on telescopes at CHARA array. 2015 ALPAO released the DM468 and the DM820. 2013 ALPAO released the
ALPAO
Instrument mounted on the Very Large Telescope
papers had been published using AMBER data. Astronomical interferometer CHARA array GRAVITY – Very Large Telescope#Instruments Infrared Spatial Interferometer
AMBER_(Very_Large_Telescope)
Long baseline interferometer
by Peter Tuthill, and used as a test facility for instruments for the CHARA Array. The interferometer had several siderostats, which collected and reflected
Sydney University Stellar Interferometer
Sydney_University_Stellar_Interferometer
Star in the constellation Serpens
and limb darkening of the asteroseismic red giant η Serpentis with the CHARA Array", Astronomy and Astrophysics, 517: A64, Bibcode:2010A&A...517A..64M,
Eta_Serpentis
Star in the constellation Corona Borealis
evolved intermediate-mass planet-hosting stars measured with PAVO at the CHARA Array". Monthly Notices of the Royal Astronomical Society. 477 (4): 4403–4413
Kappa_Coronae_Borealis
Star in the constellation Leo
Effective Temperatures of B-type Stars from Optical Interferometry with the CHARA Array". The Astrophysical Journal. 873 (1): 91. Bibcode:2019ApJ...873...91G
Sigma_Leonis
Third-magnitude star in the constellation Cygnus
Effective Temperatures of B-type Stars from Optical Interferometry with the CHARA Array". The Astrophysical Journal. 873 (1): 91. Bibcode:2019ApJ...873...91G
Delta_Cygni
Star in the constellation Capricornus
retrieved 2017-05-15. Klement, Robert; et al. (February 2024), "The CHARA Array Interferometric Program on the Multiplicity of Classical Be Stars: New
Epsilon_Capricorni
Binary star system in the constellation Andromeda
Yesenia; Caruso, Cameron; Gustafson, Cody; Earick, Mason (2026-08-27). "CHARA Array Observations of the Evolved Components in Symbiotic Star Systems". The
EG_Andromedae
Star in the constellation Cassiopeia
record for this source at VizieR. Touhami, Y.; et al. (May 2013). "A CHARA Array Survey of Circumstellar Disks around Nearby Be-type Stars". The Astrophysical
Omicron_Cassiopeiae
Multiple star in the constellation Cygnus
N. H (2013). "Interferometric radii of bright Kepler stars with the CHARA Array: θ Cygni and 16 Cygni a and B". Monthly Notices of the Royal Astronomical
16_Cygni
Star in the constellation Cepheus
C. D.; et al. (2014). "Separated Fringe Packet Observations with the CHARA Array. II. omega Andromeda, HD 178911, and xi Cephei". The Astronomical Journal
Xi_Cephei
American astronomer (born 1968)
in the commissioning of the Palomar Testbed Interferometer, and the CHARA Array. In 2007, he became a member of the astronomy faculty at the European
Gerard_van_Belle
Star in the constellation Draco
evolved intermediate-mass planet-hosting stars measured with PAVO at the CHARA Array". Monthly Notices of the Royal Astronomical Society. 477 (4): 4403–4413
HD_167042
Star in the constellation Cetus
Effective Temperatures of B-type Stars from Optical Interferometry with the CHARA Array". The Astrophysical Journal. 873 (1): 91. Bibcode:2019ApJ...873...91G
Xi2_Ceti
Star in the constellation Hercules
optical and near-IR wavelengths with the VLTI, NPOI, IOTA, PTI, and the CHARA Array". Astronomy & Astrophysics. 559: A111. arXiv:1308.6715. Bibcode:2013A&A
89_Herculis
Star in the constellation Lyra
T. A. (October 2018). "Separated Fringe Packet Observations with the CHARA Array. III. The Very High-eccentricity Binary HR 7345". The Astronomical Journal
HD_181655
travel, tourism, insurance
CHARA ARRAY
CHARA ARRAY
Boy/Male
Muslim
Charm
Female
English
Feminine form of Latin Clarus, CLARA means "clear, bright." In use by the English and Italians.
Female
Hebrew
Variant spelling of Hebrew Channa, CHANA means "favor; grace."Â
Boy/Male
Indian
Charm
Female
English
Anglicized form of Irish Gaelic Ciara, CEARA means "little black one."
Girl/Female
African, Bengali, French, Gujarati, Hindu, Indian, Italian, Kannada, Latin, Malayalam, Sanskrit
Quiet and Frisky; Option; Happiness; Joy
Female
Spanish
Pet form of Spanish Rosario, CHARO means "rosary."
Girl/Female
Irish
The feminine form of Ciaran, from the Irish ciar meaning “dark†and implies “dark hair and brown eyes.†St. Ciara was a distinguished seventh-century figure who established a monastery at Kilkeary in County Tipperary. It was the fourth most popular baby girl name in Ireland in 2003.
Girl/Female
Indian
Dhara
Female
Hebrew
(×—Ö·×™Ö¼Ö´×”) Feminine form of Hebrew Chayim, CHAYA means "alive."
Female
Italian
Italian form of Latin Clara, CHIARA means "clear, bright."
Female
English
Pet form of English Charlene, CHARLA means "man."
Girl/Female
Tamil
Dhara
Girl/Female
Indian
Quiet and frisky
Female
English
Modern English name derived either from Italian cara, a term of endearment CARA means "beloved," or from the Irish Gaelic word cara, meaning "friend."
Female
Greek
(ΧαÏά) Greek name derived from the word chara, CHARA means "joyful."
Female
Hebrew
(חַוָּה) Variant spelling of Hebrew Chavva, CHAVA means "life."Â
Female
Irish
Feminine form of Irish Gaelic Ciarán, CIARA means "little black one."
Surname or Lastname
English
English : habitational name from Chard or South Chard in Somerset, recorded in Domesday Book as Cerdren, possibly from Old English ceart ‘rough heathland’ + ærn ‘building’, ‘dwelling’. In some instances the surname may have arisen simply as a topographic name from ceart.French : from the personal name Chard, a short form of Richard;French : habitational name for someone from Chard in the department of Creuse.
Girl/Female
African, Indian, Swahili
Charm
CHARA ARRAY
CHARA ARRAY
CHARA ARRAY
CHARA ARRAY
CHARA ARRAY
CHARA ARRAY
CHARA ARRAY
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