Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/73204
Title: One-dimensional image reconstruction by exponential filtering in infrared stellar speckle interferometry: application to irc +10216
Authors: Navarro, Rafael
Benitez, Domingo 
Javier Fuentes, F.
UNESCO Clasification: 120326 Simulación
220990 Tratamiento digital. Imágenes
1203 Ciencia de los ordenadores
Issue Date: 1990
Journal: Journal of the Optical Society of America A: Optics and Image Science, and Vision 
Abstract: Exponential filtering, together with an improved version of the iterative Fourier-transform algorithm, is applied to image reconstruction from one-dimensional infrared stellar speckle interferometry data. The performance of the method is checked first by computer simulations with both noiseless and noisy data and then with a realistic simulation of one-dimensional infrared stellar speckle interferometry. We have seen no problems with convergence. The only problem that we found was an expected noisy appearance of the results when noisy data were simulated. Finally, the method was applied to observational specklegrams of the infrared source IRC +10216, in two standard photometric bands: K and M (2.2 and 5 m, respectively). The reconstruction in K of a north-south scan clearly shows three components inside a circumstellar shell. On the other hand, in the M band only a wing on the north side of the main component is resolvable.
URI: http://hdl.handle.net/10553/73204
ISSN: 1084-7529
DOI: 10.1364/JOSAA.7.000459
Source: Journal of the Optical Society of America A: Optics and Image Science, and Vision [ISSN 1084-7529], v. 7 (3), p. 459-467, (Enero 1990)
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