Shift-And-Add For Astronomical Imaging

Erez Ribak; E. Keith Hege; Nicolas V Strobel; Julian C. Christou

doi:10.1117/12.951077

5 July 1989 Shift-And-Add For Astronomical Imaging

Erez Ribak, E. Keith Hege, Nicolas V Strobel, Julian C. Christou

Proceedings Volume 1038, 6th Mtg in Israel on Optical Engineering; (1989) https://doi.org/10.1117/12.951077
Event: Sixth Meeting of Optical Engineering in Israel, 1988, Tel Aviv, Israel

Abstract

We have obtained diffraction-limited astronomical images utilising a variant of the shift-and-add method. We show that the matched filter approach for extending the weighted-shift-and-add method does indeed reduce specklegrams from extended objects and one dominated by photon noise. The method is abberation-insensitive and yields very high dynamic range results. The iterative method for arriving at the matched filter does not automatically converge in the case of photon-noisy specklegrams for objects with more than one maximum. Methods for making the procedure more "artificially intelligent" are discussed.

Citation Download Citation

Erez Ribak, E. Keith Hege, Nicolas V Strobel, and Julian C. Christou "Shift-And-Add For Astronomical Imaging", Proc. SPIE 1038, 6th Mtg in Israel on Optical Engineering, (5 July 1989); https://doi.org/10.1117/12.951077

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