Speckle imaging and speckle spectroscopy

Details Speckle imaging and speckle spectroscopy Speckle imaging and speckle spectroscopy

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1130..148w&link_type=abstract

IN: New technologies for astronomy; Proceedings of the Meeting, Paris, France, Apr. 25, 26, 1989 (A90-37976 16-89). Bellingham,

Astronomy and Astrophysics

Astronomy

Astronomical Spectroscopy, Seeing (Astronomy), Speckle Interferometry, High Resolution, Speckle Patterns, Very Long Base Interferometry

Scientific paper

The 'bispectrum' or 'triple correlation processing' speckle-masking method yields diffraction-limited images despite atmospheric image degradation and telescope aberrations; the limiting magnitude is approximately 18. An account is presently given of the theory and applications of speckle masking. High-resolution images and resolution-element spectra can be simultaneously obtained by objective prism speckle spectroscopy and projection speckle spectroscopy methods. The application of speckle masking to coherent arrays of telescopes is noted to be able to yield, in the case of the 4 x 8 m ESO Very Large Telescope, an angular resolution of 2.0 milliarcsec.

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