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.

© 1978 Optical Society of America

Speckle interferometry measurements of atmospheric nonisoplanicity using double stars*

Arthur M. Schneiderman and Douglas P. Karo
J. Opt. Soc. Am. 68(3) 338-347 (1978)

Measurement of the size of the isoplanatic patch using a phase-correcting telescope

S. Pollaine, A. Buffington, and F. S. Crawford
J. Opt. Soc. Am. 69(1) 84-89 (1979)

Measurement of r₀ with speckle interferometry

Arthur M. Schneiderman and Douglas P. Karo
J. Opt. Soc. Am. 68(3) 348-351 (1978)

Speckle interferometry on the 2.5 m Isaac Newton telescope

D. R. Beddoes, J. C. Dainty, B. L. Morgan, and R. J. Scaddan
J. Opt. Soc. Am. 66(11) 1247-1251 (1976)

Changes in the atmospheric-lens modulation transfer function used for calibration in solar speckle interferometry

C. Aime, G. Ricort, C. Roddier, and G. Lago
J. Opt. Soc. Am. 68(8) 1063-1066 (1978)