COMPUTER ASSISTED PHOTOMETRY USING SIMULATED ANNEALING
Date
1993-02-01
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Abstract
The computationaltechnique known as simulated annealing,
which originally was used to solve problems in combinatiorial
optimization, can be quite effectively used to fit functions of many
parameters to a set of data. This paper discusses the application of
simulated annealing to the fitting of Moffat functions to crowded
field star images. Overlapping star profiles can be fit
simultaneously and missed stars can be located based on the $X sup 2$
value of the fit, and the resulting functional model yields excellent
photometric results. This method has been integrated into a
photometry system which allows the user to select the accuracy of the
results at the expense of time needed to perform the calculations.
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Computer Science