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bkg_rms bkg_rms

Evaluation of the background level, rms, and S/N ratio

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When peak is found, its parameters can be precised for background level, noise rms, and signal over background ratio (S/N) can be estimated. All these values can be evaluated using pixels surrounding the peak on some distance. For all peak-finders we use the same algorithm. Surrounding pixels are defined by the ring with internal radial parameter r0 and ring width dr (both in pixels). The number of surrounding pixels depends on r0 and dr parameters as shown in matrices below. We use notation

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