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The CHARA Array is an optical astronomical interferometer operated by The Center for High Angular Resolution Astronomy ( CHARA ) of the Georgia State University ( GSU ).
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CHARA and Array
The radius has been directly measured using interferometery with the CHARA Array, which yields a result of 77. 8 % of the Sun's radius.
In 2008, the primary star and the accretion disk of the secondary star were resolved and imaged using the CHARA Array interferometer and the Michigan InfraRed Combiner ( MIRC ) in the near infrared H band ( see video below ), allowing the orbital elements to be computed for the first time.
The CHARA Array is an interferometer formed from six 1 meter telescopes arranged along three axes with a maximum separation length of 330 m. The light beams travel through vacuum tubes and are combined optically, requiring a building 100 meters long with movable mirrors to keep the light in phase as the earth rotates.
Looking down on the top of Mount Wilson, including the historic 100 " Hooker telescope ( center ), the 60 " telescope ( center left ), and the GSU CHARA Array.
* First 4-Telescope Fringes at the CHARA Array
* First Results from the CHARA Array.
* The VEGA instrument on the CHARA Array.
it: CHARA Array
CHARA and is
The " Michelson Interferometer " design is found on modern operational observatories such as VLTI, CHARA – and the U. S. Navy's NPOI.
CHARA is the World's highest angular resolution telescope at near-infrared wavelengths.
CHARA and optical
To date NPOI has produced the highest resolution optical images of any astronomical instrument, though this may change when the CHARA array and Magdalena Ridge Observatory Interferometer begin optical-band operations.
CHARA and interferometer
In 2006 and 2007, J. D. Monnier and his coworkers produced an image of Altair's surface 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 star, apart from the Sun, had been imaged.
CHARA and by
Observations by the CHARA array in 2005 – 06 confirmed this deduction.
CHARA and Center
The Operations Center of the CHARA array
CHARA and Georgia
* CHARA Research, the home page of CHARA at Georgia State University
CHARA and University
* Imaging the Surface of Altair, University of Michigan news release detailing the CHARA array direct imaging of the stellar surface in 2007.
Array and is
** Array indexing is a secondary notion, defined in terms of pointer arithmetic.
An example of an optofluidic device is a Tuneable Microlens Array
Nial ( from " Nested Interactive Array Language ") is a high-level array programming language developed from about 1981 by Mike Jenkins of Queen's University, Kingston, Ontario, Canada.
The array concept is named the " Allen Telescope Array " ( ATA ) ( formerly, One Hectare Telescope ) after the project's benefactor Paul Allen.
This is an image of the instrument called the Proportional Counter Array on the Rossi X-ray Timing Explorer ( RXTE ) satellite.
The world's largest physically connected telescopes, the SKA ( Square Kilometre Array ), is planned to start operation in 2020.
In electronics and computer architecture, a data flow determines for which time which data item is scheduled to enter or leave which port of a systolic array, a Reconfigurable Data Path Array or similar pipe network, or other processing unit or block ( cf.
An Array of Upper Limb assessment are utilised to provide a treatment care that is effective and appropriate.
* Array space efficiency is given as an expression in terms of the number of drives, ; this expression designates a value between 0 and 1, representing the fraction of the sum of the drives ' capacities that is available for use.
* Array failure rate is given as an expression in terms of the number of drives,, and the drive failure rate, ( which is assumed to be identical and independent for each drive ).
However the storage is attached, the drives themselves are usually configured as a Redundant Array of Inexpensive ( or Independent ) Discs RAID, which may be configured to provide appropriate combination of faster disk access or protection against the failure of one ( or even two ) discs in the physical RAID array.
Multi-layer PCB-s allow for much higher component density and in many cases components in Ball Grid Array ( BGA ) packages can't be placed on double sided PCB-s because there simply is not enough space in between SMD pads to route traces to all contacts.
An example is Ball Grid Array ( BGA ) using tin-lead solder balls for connections losing their balls on bare copper traces or using lead-free solder paste.
* Square Kilometre Array, a proposed radio telescope in South Africa or Australia, which is intended to have a collecting area of approximately 1 km < sup > 2 </ sup >
There is also a VLBI network, the Long Baseline Array, operating in Australia.
* Fort Davis is home to one of ten dishes comprising the Very Long Baseline Array ( VLBA )
* A Blue Gene / P system is the central processor for the Low Frequency Array for Radio astronomy ( LOFAR ) project in the Netherlands and surrounding European countries.
Delta is home to the Lon and Mary Watson Cosmic Ray Center, the main staging area for the Telescope Array experiment.
* Array processing may simplify programming but use of separate statements to sum different elements of the same array ( s ) may produce code that is not easily optimized and that requires multiple passes of the arrays that might otherwise have been processed in a single pass.
The reconfigurable nature of the VLTI is similar to that of the Very Large Array.
The Earth's atmosphere is opaque over most of the far-infrared, so that ground-based observations are limited to submillimetre wavelengths using high-altitude telescopes such as the James Clerk Maxwell Telescope, the Caltech Submillimeter Observatory, and the Submillimeter Array.
While this possibility is interesting to ponder ... Large Field Array can also seem more trite than profound.
The Very Long Baseline Array ( VLBA ) uses ten dedicated, 25-meter telescopes spanning 5351 miles across the United States, and is the largest VLBI array that operates all year round as both an astronomical and geodesy instrument.
Array and optical
300pxAn optical image of the galaxy Messier 87 | M87 ( Hubble Space Telescope | HST ), a radio image of same galaxy using Interferometry ( Very Large Array-VLA ), and an image of the center section ( VLBA ) using a Very Long Baseline Array ( Global VLBI ) consisting of antennas in the US, Germany, Italy, Finland, Sweden and Spain.
Regarding the latter, the school operates both the Big Bear Solar Observatory ( optical ), and the Owens Valley Solar Array ( radio ).
The MSS FPA, or Focal Plane Array consisted of 24 square optical fibers extruded down to. 0002 " square fiber tips in a 4x6 array to be scanned across the Nimbus spacecraft path in a +/- 6 degree scan as the satellite was in a 10: 30 polar orbit, hence it had to be launched from Vandenberg AFB.
* Extremely Large Synthesis Array, a proposed terrestrial optical / infrared interferometerical telescope
The Array of Low Energy X-ray Imaging Sensors ( ALEXIS ) X-ray telescopes feature curved mirrors whose multilayer coatings reflect and focus low-energy X-rays or extreme ultraviolet light the way optical telescopes focus visible light.
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