Abstract

Since the invention in 1970 by Labeyrie¹ of the technique of stellar speckle interferometry, there have been many attempts to extend it to produce diffraction-limited images through turbulence. In speckle interferometry, short exposure (≈10ms) images i(x) are recorded through a narrowband filter (≈10nm) and an estimate is made of the average energy spectrum <|I(u)|²> of the image, where I(u) is the Fourier transform of i(x).

© 1989 Optical Society of America