Measurements of atmospheric isoplanatism using speckle interferometry*
- 1 February 1978
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America
- Vol. 68 (2) , 169-175
- https://doi.org/10.1364/josa.68.000169
Abstract
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 arc sec separation binary stars. Substantial correlation is found to at least 0.6 of the diffraction limit cutoff for the 4.7 arc sec pair.Keywords
This publication has 4 references indexed in Scilit:
- Speckle image reconstruction of solar featuresNature, 1977
- Diffraction-limited atmospheric imaging of extended objects*Journal of the Optical Society of America, 1976
- Isoplanicity: The translation invariance of the atmospheric Green’s function*Journal of the Optical Society of America, 1975
- The Transfer Function, Signal-to-Noise Ratio, and Limiting Magnitude in Stellar Speckle InterferometryMonthly Notices of the Royal Astronomical Society, 1974