Shift-and-add for astronomical imagingDiffraction-limited astronomical images have been obtained utilizing a variant of the shift-and-add method. It is shown that the matched filter approach for extending the weighted shift-and-add method reduces specklegrams from extended objects and from an object dominated by photon noise. The method is aberration-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.
Document ID
19900024350
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ribak, Erez (Technion - Israel Institute of Technology Haifa, United States)
Hege, E. Keith (Technion - Israel Inst. of Tech. Haifa, Israel)
Strobel, Nicolas V. (Steward Observatory Tucson, AZ, United States)
Christou, Julian C. (National Optical Astronomy Observatories Tucson, AZ, United States)