Abstract

Stellar speckle interferometry of unresolved objects yields the short-exposure lens–atmosphere MTF. Using Korff’s calculations, a value of the wave correlation scale r₀ can be obtained from the MTF. We demonstrate this, and also show how the power spectra can be corrected so that r₀ values can be extracted from resolvable object data. Assuming the validity of Korff’s calculations for speckle interferometry, unresolved and resolved object data can be then used to test calculations for short-and long-exposure imaging. Tests with field data show only a weak distinction in speckle interferometry between short- and long-exposure imaging. A Gaussian image shape does not agree with the data.

© 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)

Measurements of atmospheric isoplanatism using speckle interferometry*

P. Nisenson and R. V. Stachnik
J. Opt. Soc. Am. 68(2) 169-175 (1978)

Speckle interferometry at finite spectral bandwidths and exposure times

Douglas P. Karo and Arthur M. Schneiderman
J. Opt. Soc. Am. 68(4) 480-485 (1978)

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)

A method for processing stellar speckle interferometry data

Gary L. Welter and Simon P. Worden
J. Opt. Soc. Am. 68(9) 1271-1275 (1978)