In 1970, the Fourier analysis ( " speckle interferometry " ) can obtain information about the high-resolution structure of the object from the statistical properties of the speckle patterns.
22.
"' Aperture Masking Interferometry "'is a form of speckle interferometry, that allows diffraction limited imaging from ground-based telescopes, and is a planned high contrast imaging mode on the James Webb Space Telescope.
23.
In optical interferometry, the closure phase was first introduced by the bispectrum speckle interferometry, the principle of which is to compute the closure phase from the complex measurement instead of the phase itself:
24.
R136a was resolved using speckle interferometry and eventually space-based observations into as many as 24 components, dominated by R136a1, R136a2, and R136a3, all three being extremely massive WNh stars several million times more luminous than the sun.
25.
Speckle interferometry has resolved a companion about 0.3 " away, around 147 AU . High resolution spectroscopy shows that there is an even closer companion, only about 0.47 AU from the primary, for a total of three stars.
26.
In the mid-1970s, astronomers at Kitt Peak National Observatory, near Tucson, Ariz ., used a technique, called speckle interferometry, to combine a series of snapshots by one large telescope to produce an interference image of the giant star Betelgeuse.
27.
An astronomer who frequently uses the system, Dr . Brian D . Mason of Georgia State University, said that of about 9, 000 bright stars recently surveyed using the Hooker telescope's new speckle interferometry system, 10 percent have turned out to be binary systems, rather than the single stars astronomers had formerly thought them to be.
28.
Speckle interferometry techniques today allow the diffraction-limited resolution of 0.02 arcseconds of 15th magnitude objects under good seeing conditions ( EMCCD-based speckle interferometer PhotonMAX-512B camera in active use since 2007 ) . " In contrast to the adaptive optics, which is effective today mainly in the infrared, speckle interferometry can be used for observations in visible and near UV bands.
29.
Speckle interferometry techniques today allow the diffraction-limited resolution of 0.02 arcseconds of 15th magnitude objects under good seeing conditions ( EMCCD-based speckle interferometer PhotonMAX-512B camera in active use since 2007 ) . " In contrast to the adaptive optics, which is effective today mainly in the infrared, speckle interferometry can be used for observations in visible and near UV bands.
