Astrophysics (Index)About

interferometry

(analysis of superimposed EMR waves)

Interferometry is the use and analysis of superimposed electromagnetic radiation waves. The patterns produced by waves from slightly different directions or wavelengths include information about relative directions and wavelengths. A device carrying out this function is called an interferometer.

Radio astronomy makes much use of interferometry (radio interferometry), using multiple radio telescopes (dishes) to achieve a higher angular resolution. Keck Observatory and other twin/multiple telescopes can be used for interferometry of visible light (optical interferometry). A type of imaging spectrograph, the imaging Fourier transform spectroscopy makes use of a type of interferometry.

Gravitational-wave detectors such as LIGO also use interferometry to measure the extremely short distances involved.


(science,astronomy,measurement)
Further reading:
http://en.wikipedia.org/wiki/Interferometry
http://en.wikipedia.org/wiki/Astronomical_optical_interferometry
https://www.eso.org/sci/meetings/2015/eris2015/L1_Jackson_Interferometry.pdf
https://science.nrao.edu/opportunities/courses/casa-caltech-winter2012/Isella_Radio_Interferometry_Basics_Caltech2012.pdf

Referenced by pages:
aperture masking interferometry (AMI)
angular resolution
baseline
CLEAN
convolution
correlator
dirty image
DSA-2000
European Southern Observatory Very Large Telescope (ESO VLT)
electronic very-long-baseline interferometry (e-VLBI)
high-resolution imaging
infrared (IR)
LISA
Lyot coronagraph (CLC)
millimeter astronomy
New Gravitational Wave Observatory (NGO)
optical interferometer
Parkes Observatory
pipeline
point source
Queen's University Radio Observatory (QRO)
radio astronomy
speckle imaging
speckle masking
speckles
speckle suppression
spectral correlator
stellar parameter determination
stellar radius determination
tomography
visibility
Very Large Array (VLA)
very-long-baseline interferometry (VLBI)

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