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Paper: Error Estimation in Elliptical Isophote Fitting
Volume: 101, Astronomical Data Analysis Software and Systems V
Page: 139
Authors: Busko, I. C.
Abstract: The STSDAS task ellipse, which fits elliptical isophotes to galaxy images, generates some of its error estimates in an empirical way, because of the fitting algorithm's incremental nature. In this work, simulated images were used in a Monte Carlo setting to assess the correctness of the error definitions. It was found that the current implementation may overestimate errors by factors 2--5. A new error computation, which follows closely the simulation results, was implemented and evaluated.
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