Measurements of atmospheric isoplanatism using speckle interferometry

Details Measurements of atmospheric isoplanatism using speckle interferometry Measurements of atmospheric isoplanatism using speckle interferometry

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978josa...68..169n&link_type=abstract

Optical Society of America, Journal, vol. 68, Feb. 1978, p. 169-175. NSF-supported research.

Physics

Optics

8

Astronomical Photography, Atmospheric Optics, Binary Stars, Image Resolution, Interferometry, Speckle Patterns, Data Acquisition, Data Reduction, Fourier Transformation, High Resolution, Imaging Techniques, Wave Front Deformation

Scientific paper

Measurements of isoplanatism for speckle interferometry and speckle imaging applications have been made at a 1.57 meter aperture telescope in Hawaii. The measurements were obtained from optically produced spatial power spectra of short-exposure images showing pairs of stars with different angular separations. The result of this process is a sequence of plots of correlation versus spatial frequency in the image for 0.25, 0.5, 1.9, and 4.7 arcsec separation binary stars. Substantial correlation is found to be at least 0.6 of the diffraction limit cutoff for the 4.7 arcsec pair.

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