The weighted-shift-and-add speckle imaging technique is analyzed using simple assumptions. The end product is shown to be a convolution of the object with a typical point-spread function (psf) that is similar in shape to the telescope psf and depends marginally on the speckle psf. A filter can be applied to each data frame before locating the maxima, either to identify the speckle locations (matched filter) or to estimate the instantaneous atmospheric psf (Wiener filter). Preliminary results show the power of the technique when applied to photon-limited data and to extended objects.
© 1986 Optical Society of America
Original Manuscript: January 23, 1986
Manuscript Accepted: July 28, 1986
Published: December 1, 1986
Erez Ribak, "Astronomical imaging by filtered weighted-shift-and-add technique," J. Opt. Soc. Am. A 3, 2069-2076 (1986)